Topic: WRT54GL: DHCP Not Working with Wireless

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Post #1

wswartzendruber

1 Jun 2008, 18:58

My problem is that wireless connections are not getting DHCP addresses. Statically assigning the client an address resolves the issue. NAS is installed. I'm up for whatever you guys have.

/etc/config/network:

#### VLAN configuration
config switch eth0
        option vlan0    "0 1 2 3 5*"
        option vlan1    "4 5"


#### Loopback configuration
config interface loopback
        option ifname   "lo"
        option proto    static
        option ipaddr   127.0.0.1
        option netmask  255.0.0.0


#### LAN configuration
config interface lan
        option type     bridge
        option ifname   "eth0.0"
        option proto    static
        option ipaddr   192.168.128.1
        option netmask  255.255.255.0
        option gateway  192.168.1.1


#### WAN configuration
config interface        wan
        option ifname   "eth0.1"
        option proto    static
        option ipaddr   192.168.1.2
        option netmask  255.255.255.242
        option dns      166.102.165.11 166.102.165.13

/etc/config/wireless:

config wifi-device  wl0
        option type     broadcom
        option channel  5
        option maclist  'XXXXXXXXXXXXXXX'
        option macfilter        '2'

config wifi-iface
        option device   wl0
        option network  lan
        option mode     ap
        option ssid     XXXXXXXXXXXXX
        option encryption psk2
        option key      XXXXXXXXXXXXX

/etc/config/dhcp:

config dhcp
        option interface        lan
        option start    100
        option limit    150
        option leasetime        12h

#config dhcp
#       option interface        wan
#       option ignore   1

Post #2

adyb

1 Jun 2008, 19:55

What is in your /etc/dnsmasq.conf

Post #3

wswartzendruber

2 Jun 2008, 00:15

adyb wrote:

What is in your /etc/dnsmasq.conf

# filter what we send upstream
domain-needed
bogus-priv
filterwin2k
localise-queries

# allow /etc/hosts and dhcp lookups via *.lan
local=/lan/
domain=lan
expand-hosts
no-negcache
resolv-file=/tmp/resolv.conf.auto

dhcp-authoritative
dhcp-leasefile=/tmp/dhcp.leases

# use /etc/ethers for static hosts; same format as --dhcp-host
# <hwaddr> <ipaddr>
read-ethers

# other useful options:
# default route(s): dhcp-option=3,192.168.1.1,192.168.1.2
#    dns server(s): dhcp-option=6,192.168.1.1,192.168.1.2

Post #4

wswartzendruber

3 Jun 2008, 02:30

Okay, now it doesn't work altogether. I can't "ipconfig /renew" on wired connections anymore, either.

Post #5

vasquez

4 Jun 2008, 13:24

Use "logread | less" to view the system log of the openwrt box. There should be some output from dnsmasq. If you cant' spot the error, post the output from logread here.

Post #6

manys

5 Jun 2008, 01:02

I'm having the same problem. I changed something innocuous (like the range) and now dnsmasq does not even have args in `ps w`, just:

Before:
5307 nobody      440 S   /usr/sbin/dnsmasq --dhcp-range=lan,192.168.20.100,192.168.20.249,255.255.255  

After:
390 nobody      420 S   /usr/sbin/dnsmasq

/etc/config/dhcp

root@wap1:/etc/init.d# cat /etc/config/dhcp
config dhcp
        option interface        lan
        option start    200
        option limit    '248'
        option leasetime        '1m'
        option ignore   '0'

/etc/dnsmasq.conf
wswartzendruber's is the default and the same as mine.

/etc/config/network

#### VLAN configuration
config switch eth0
        option vlan0    "1 2 3 4 5*"
        option vlan1    "0 5"


#### Loopback configuration
config interface loopback
        option ifname   "lo"
        option proto    static
        option ipaddr   127.0.0.1
        option netmask  255.0.0.0


#### LAN configuration
config interface lan
        option type     'bridge'
        option ifname   "eth0.0"
        option proto    static
        option ipaddr   '192.168.20.254'
        option netmask  255.255.255.0
        option gateway  192.168.20.1

Post #7

wswartzendruber

5 Jun 2008, 03:38

Huh...

Jan  1 01:44:20 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:44:20 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:44:21 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:44:21 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:44:28 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:44:28 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:44:43 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:44:43 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:50:13 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:50:13 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:50:14 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:50:14 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:50:21 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:50:21 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:50:36 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:50:36 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:55:56 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:55:56 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:55:57 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:55:57 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:56:05 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:56:05 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf
Jan  1 01:56:20 router daemon.info dnsmasq[384]: DHCPDISCOVER(br-lan) 00:16:41:15:85:bf
Jan  1 01:56:20 router daemon.info dnsmasq[384]: DHCPOFFER(br-lan) 192.168.128.248 00:16:41:15:85:bf

And there's way more of those messages than what I posted.

Post #8

vasquez

5 Jun 2008, 14:41

Comment the option ignore line.

Restart dnsmasq with
/etc/init.d/dnsmasq stop
rm -fv /tmp/dhcp.leases
/etc/init.d/dnsmasq start
then check logread output again.

The discussion might have continued from here.

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