OpenWrt Forum Archive

Topic: Let's find out, what's broken in my router..No access by cable, no WAN

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Post #26
Romandas
20 Aug 2017, 15:04

Found strange thing. I put WAN cable in LAN 1 output and LAN cable to any other LAN port - and I have Internet through that cable, but I can't access 192.168.1.1 through it, only through wireless. But my wireless doesn't get Internet. My router behaves as junction (bridge?) of ISP cable and cable I put from router but separate from wireless. And it's not shown in Luci as I get WAN. It's like an error in swith configuration.

After I execute arp -a, my router sees only wireless:

root@OpenWrt:~# arp -a
IP address       HW type     Flags       HW address            Mask     Device
192.168.1.222    0x1         0x2         00:23:4e:73:81:f7     *        br-lan

http://i.imgur.com/CRI2d7S.png

(Last edited by Romandas on 20 Aug 2017, 16:42)

Post #27
mk24
20 Aug 2017, 16:48

I have a TP-Link that was hit by lightning that does what your router does.  The switch ports show a connection, but no traffic will pass to the CPU.  Wireless and everything else works fine, but the eth0 port is faulty. 

Can you go back to stock firmware to be sure the hardware works?

Post #28
Romandas
20 Aug 2017, 17:05
mk24 wrote:

I have a TP-Link that was hit by lightning that does what your router does.  The switch ports show a connection, but no traffic will pass to the CPU.  Wireless and everything else works fine, but the eth0 port is faulty. 

Can you go back to stock firmware to be sure the hardware works?

Yes I can go back to stock firmware, but it's not openwrt compatible. It suports these commands:
help, logout, exit, quit, reboot, adsl, xtm, loglevel, logdest, virtualserver, ddns, dumpcfg, dumpmdm, syslog, psp, ping, traceroute, nslookup, grep, sntp, sysinfo, tftp, arp, defaultgateway, dhcpserver, dns, lan, lanhosts, passwd, ppp, restoredefault, route, save, wan, build, version, serialnumber, mac, cpuload, meminfo, curconn, maxconn, portstatus, modelname, showconn, pmir, dhcpc, defpskkey, defwepkey.
I will try some of them.

Here it is from stock firmare - ethernet is working, Internet also it's not faulty (default gateway 192.168.1.254):
http://i.imgur.com/GRzrV5Y.png

Ping from router console:

 
 > ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1): 56 data bytes
56 bytes from 192.168.1.1: icmp_seq=0 ttl=128 time=0.9 ms
56 bytes from 192.168.1.1: icmp_seq=1 ttl=128 time=0.8 ms
56 bytes from 192.168.1.1: icmp_seq=2 ttl=128 time=0.7 ms
56 bytes from 192.168.1.1: icmp_seq=3 ttl=128 time=0.8 ms

--- 192.168.1.1 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 0.7/0.8/0.9 ms


 > ping 192.168.1.2
PING 192.168.1.2 (192.168.1.2): 56 data bytes
56 bytes from 192.168.1.2: icmp_seq=0 ttl=128 time=1.7 ms
56 bytes from 192.168.1.2: icmp_seq=1 ttl=128 time=2.1 ms
56 bytes from 192.168.1.2: icmp_seq=2 ttl=128 time=3.2 ms
56 bytes from 192.168.1.2: icmp_seq=3 ttl=128 time=1.5 ms

--- 192.168.1.2 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 1.5/2.1/3.2 ms

 > portstatus
Port0 status : 100 Mbps FD
Port1 status : 100 Mbps FD
Port2 status : DOWN
Port3 status : DOWN
Port4 status : DOWN
 > lan show
br0             Link encap:Ethernet  HWaddr 64:68:0C:C7:08:78
                inet addr:192.168.1.254  Bcast:192.168.1.255  Mask:255.255.255.0
                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
                RX packets:2293 errors:0 dropped:0 overruns:0 frame:0
                TX packets:1179 errors:0 dropped:0 overruns:0 carrier:0
                collisions:0 txqueuelen:0
                RX bytes:297440 (290.4 KiB)  TX bytes:444676 (434.2 KiB)

br0:0           Link encap:Ethernet  HWaddr 64:68:0C:C7:08:78
                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
 > wan show
VCC     Con.    Service         Interface       Proto.  IGMP    NAT     Status          IP
        ID      Name            Name                                                    address
        1       WAN             eth0_1          IPoW    Disable Enable  Connected       78.60.224.19                          7
        2       br_eth0_2.6     eth0_2.6        Bridged Disable N/A     Connected
        3       ipoe_eth0_3.5   eth0_3.5        IPoW    Disable Disable Connected       10.125.92.53

 > lanhosts show all
Bridge br0
   MAC Addr          IP Addr     Lease Time Remaining    Hostname
00:26:22:10:de:44  192.168.1.1        83852              RomandasaA-N
00:23:4e:73:81:f7  192.168.1.2        84346              RomandasaA-N
Bridge br1
   MAC Addr          IP Addr     Lease Time Remaining    Hostname
 >

(Last edited by Romandas on 20 Aug 2017, 18:03)

Post #29
Romandas
21 Aug 2017, 04:38
golialive wrote:

Maybe start with "tcpdump -i eth0" and see if anything is going on on your network.

tcpdump from openWrt, Cable LAN, wireless, WAN cable:

root@OpenWrt:/# tcpdump -i eth0
tcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
20:52:15.468457 IP RomandasaA-N.lan.51081 > 224.0.0.252.5355: UDP, length 33
20:52:15.475378 IP RomandasaA-N.lan.58682 > 224.0.0.252.5355: UDP, length 27
20:52:15.481680 IP RomandasaA-N.lan.60242 > 224.0.0.252.5355: UDP, length 30
20:52:15.559808 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:15.813825 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:15.815031 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:15.829329 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:16.142246 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:16.148837 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:16.565219 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:16.566817 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:16.580869 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:17.148485 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:17.156280 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:17.322423 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:17.323962 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:17.331283 IP RomandasaA-N.lan.53558 > 224.0.0.252.5355: UDP, length 27
20:52:17.333260 IP RomandasaA-N.lan.55788 > 224.0.0.252.5355: UDP, length 33
20:52:17.337647 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:17.342156 IP RomandasaA-N.lan.54131 > 224.0.0.252.5355: UDP, length 30
20:52:17.719756 IP RomandasaA-N.lan.netbios-dgm > 192.168.1.255.netbios-dgm: NBT                                                             UDP PACKET(138)
20:52:17.732063 IP RomandasaA-N.lan.55788 > 224.0.0.252.5355: UDP, length 33
20:52:17.735460 IP RomandasaA-N.lan.53558 > 224.0.0.252.5355: UDP, length 27
20:52:17.749930 IP RomandasaA-N.lan.54131 > 224.0.0.252.5355: UDP, length 30
20:52:17.914625 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                                             from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:18.083456 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:18.084963 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:18.099038 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:18.839679 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:18.843747 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:18.853406 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:19.154271 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:19.160167 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _google                                                            cast._tcp.local. (40)
20:52:20.938614 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                                             from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:23.476921 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:23.485519 IP RomandasaA-N.lan.64263 > 224.0.0.252.5355: UDP, length 22
20:52:23.885448 IP RomandasaA-N.lan.64263 > 224.0.0.252.5355: UDP, length 22
20:52:23.962662 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                                             from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:24.228774 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:24.991581 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT U                                                            DP PACKET(137): QUERY; REQUEST; BROADCAST
20:52:26.986637 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                                             from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:30.010635 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                                             from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:33.034616 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:33.847521 IP RomandasaA-N.lan.netbios-dgm > 192.168.1.255.netbios-dgm: NBT UDP PACKET(138)
20:52:36.058614 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:38.616304 IP RomandasaA-N.lan.17500 > 192.168.1.255.17500: UDP, length 143
20:52:39.086631 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:42.114617 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:45.138615 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:48.162707 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:51.186643 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:54.214618 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:52:57.242670 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:00.270614 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:03.298662 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:06.326641 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:07.912142 IP RomandasaA-N.lan.netbios-dgm > 192.168.1.255.netbios-dgm: NBT UDP PACKET(138)
20:53:08.765312 IP RomandasaA-N.lan.17500 > 192.168.1.255.17500: UDP, length 143
20:53:09.354669 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:12.382667 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:14.332849 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 224.0.0.252
20:53:14.413121 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 224.0.0.252
20:53:14.420863 IP RomandasaA-N.lan.63762 > 224.0.0.252.5355: UDP, length 30
20:53:14.423820 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 239.255.255.250
20:53:14.810146 IP RomandasaA-N.lan.63762 > 224.0.0.252.5355: UDP, length 30
20:53:15.414612 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:16.406882 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:16.410135 IP RomandasaA-N.lan.61359 > 224.0.0.252.5355: UDP, length 22
20:53:16.816969 IP RomandasaA-N.lan.61359 > 224.0.0.252.5355: UDP, length 22
20:53:17.162597 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:17.442881 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:17.450028 IP RomandasaA-N.lan.54998 > 224.0.0.252.5355: UDP, length 30
20:53:17.451192 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:17.461766 IP RomandasaA-N.lan.54370 > 224.0.0.252.5355: UDP, length 25
20:53:17.462967 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:17.477046 IP RomandasaA-N.lan.52582 > 224.0.0.252.5355: UDP, length 31
20:53:17.849731 IP RomandasaA-N.lan.54370 > 224.0.0.252.5355: UDP, length 25
20:53:17.850674 IP RomandasaA-N.lan.54998 > 224.0.0.252.5355: UDP, length 30
20:53:17.864407 IP RomandasaA-N.lan.52582 > 224.0.0.252.5355: UDP, length 31
20:53:17.920872 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.172436 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.178624 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.187541 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.446636 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:18.869304 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:18.875872 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:18.930366 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.932794 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:18.946664 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.156334 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.692423 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.697848 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.711634 IP RomandasaA-N.lan.55318 > 224.0.0.252.5355: UDP, length 30
20:53:19.717113 IP RomandasaA-N.lan.63294 > 224.0.0.252.5355: UDP, length 25
20:53:19.718791 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.724087 IP RomandasaA-N.lan.56377 > 224.0.0.252.5355: UDP, length 31
20:53:19.881360 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:19.887232 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:19.911975 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:19.979320 IP6 fe80::6668:cff:fec7:878.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit
20:53:20.109450 IP RomandasaA-N.lan.55318 > 224.0.0.252.5355: UDP, length 30
20:53:20.111337 IP RomandasaA-N.lan.63294 > 224.0.0.252.5355: UDP, length 25
20:53:20.122138 IP RomandasaA-N.lan.56377 > 224.0.0.252.5355: UDP, length 31
20:53:20.451871 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:20.453134 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:20.471253 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:20.602060 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 239.255.255.250
20:53:20.672329 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:21.209424 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:21.210920 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:21.228484 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:21.470619 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:21.894413 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:21.897662 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:23.023237 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:23.030721 IP RomandasaA-N.lan.59324 > 224.0.0.252.5355: UDP, length 22
20:53:23.444652 IP RomandasaA-N.lan.59324 > 224.0.0.252.5355: UDP, length 22
20:53:23.777371 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.066942 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.070558 IP RomandasaA-N.lan.50341 > 224.0.0.252.5355: UDP, length 33
20:53:24.074034 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.078938 IP RomandasaA-N.lan.55139 > 224.0.0.252.5355: UDP, length 32
20:53:24.089804 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.097257 IP RomandasaA-N.lan.54621 > 224.0.0.252.5355: UDP, length 30
20:53:24.113909 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 224.0.0.252
20:53:24.133997 IP RomandasaA-N.lan.54344 > 224.0.0.252.5355: UDP, length 30
20:53:24.135755 IP RomandasaA-N.lan > 224.0.0.2: igmp leave 239.255.255.250
20:53:24.476597 IP RomandasaA-N.lan.50341 > 224.0.0.252.5355: UDP, length 33
20:53:24.477441 IP RomandasaA-N.lan.55139 > 224.0.0.252.5355: UDP, length 32
20:53:24.487164 IP RomandasaA-N.lan.54621 > 224.0.0.252.5355: UDP, length 30
20:53:24.494642 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:24.534913 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.540239 IP RomandasaA-N.lan.54344 > 224.0.0.252.5355: UDP, length 30
20:53:24.801491 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.812283 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:24.813750 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:25.101263 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:25.106904 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:25.561414 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:25.565947 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:25.567576 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:25.994636 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:26.536637 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:26.545186 IP RomandasaA-N.lan.49385 > 224.0.0.252.5355: UDP, length 22
20:53:26.751291 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:26.962562 IP RomandasaA-N.lan.49385 > 224.0.0.252.5355: UDP, length 22
20:53:27.287797 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:27.511417 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:27.518651 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:27.562276 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:27.572350 IP RomandasaA-N.lan.60642 > 224.0.0.252.5355: UDP, length 32
20:53:27.577206 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:27.583583 IP RomandasaA-N.lan.52580 > 224.0.0.252.5355: UDP, length 31
20:53:27.587281 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:27.589430 IP RomandasaA-N.lan.52123 > 224.0.0.252.5355: UDP, length 28
20:53:27.970568 IP RomandasaA-N.lan.60642 > 224.0.0.252.5355: UDP, length 32
20:53:27.973699 IP RomandasaA-N.lan.52123 > 224.0.0.252.5355: UDP, length 28
20:53:27.977014 IP RomandasaA-N.lan.52580 > 224.0.0.252.5355: UDP, length 31
20:53:28.050994 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:28.294843 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:28.312852 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:28.329381 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:28.628344 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:28.637698 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:29.047012 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.061358 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.062892 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.637918 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:29.641301 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:29.811745 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.819234 IP RomandasaA-N.lan.62293 > 224.0.0.252.5355: UDP, length 32
20:53:29.827960 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.834743 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:29.849003 IP RomandasaA-N.lan.52261 > 224.0.0.252.5355: UDP, length 31
20:53:29.849870 IP RomandasaA-N.lan.60785 > 224.0.0.252.5355: UDP, length 28
20:53:30.232055 IP RomandasaA-N.lan.netbios-dgm > 192.168.1.255.netbios-dgm: NBT UDP PACKET(138)
20:53:30.238679 IP RomandasaA-N.lan.62293 > 224.0.0.252.5355: UDP, length 32
20:53:30.266038 IP RomandasaA-N.lan.60785 > 224.0.0.252.5355: UDP, length 28
20:53:30.271672 IP RomandasaA-N.lan.52261 > 224.0.0.252.5355: UDP, length 31
20:53:30.546631 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:30.579256 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:30.592395 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:30.593912 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:31.337808 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:31.355285 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:31.358896 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:31.637476 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:31.645941 IP RomandasaA-N.lan.mdns > 224.0.0.251.mdns: 0 PTR (QM)? _googlecast._tcp.local. (40)
20:53:33.574615 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:35.955835 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:35.959110 IP RomandasaA-N.lan.61604 > 224.0.0.252.5355: UDP, length 22
20:53:36.360963 IP RomandasaA-N.lan.61604 > 224.0.0.252.5355: UDP, length 22
20:53:36.598617 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:36.711403 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:37.466993 IP RomandasaA-N.lan.netbios-ns > 192.168.1.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
20:53:38.883273 IP RomandasaA-N.lan.17500 > 192.168.1.255.17500: UDP, length 143
20:53:39.630615 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:42.654623 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:45.678612 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:53:46.338431 IP RomandasaA-N.lan.netbios-dgm > 192.168.1.255.netbios-dgm: NBT UDP PACKET(138)
2

And after turning off wifi in PC, but with LAN cable and WAN in Router:

root@OpenWrt:/# tcpdump -i eth0
tcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
20:58:08.910624 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:11.934637 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:14.958622 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:17.982674 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:21.010609 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:24.034609 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:27.062642 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:28.714522 IP 0.0.0.0 > 224.0.0.1: igmp query v2
20:58:28.714660 IP6 fe80::6668:cff:fec7:878 > ff02::1: HBH ICMP6, multicast list                                    ener querymax resp delay: 10000 addr: ::, length 24
20:58:30.090629 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:33.114615 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:36.142646 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:39.170635 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:42.194626 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:45.222649 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:48.250606 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:51.274626 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:54.302659 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:58:57.251295 IP6 fe80::6668:cff:fec7:878.dhcpv6-client > ff02::1:2.dhcpv6-ser                                    ver: dhcp6 solicit
20:58:57.330607 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:00.354617 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:03.382788 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:06.410633 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:09.434607 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:12.462650 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:15.490611 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:18.514622 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:21.542641 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request                                     from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:24.570605 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:27.594610 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:30.622659 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
20:59:33.650645 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 64:68:0c:c7:08:78 (oui Unknown), length 300
^C
32 packets captured
32 packets received by filter
0 packets dropped by kernel
root@OpenWrt:/#

(Last edited by Romandas on 21 Aug 2017, 04:45)

The discussion might have continued from here.