Hi there -- here's another topic on DNS resolution as I have not been able to find a fix by reading other posts. Please bear with me and I would appreciate if you could point out the errors and advise on how to fix the problem.
Devices on my network are able to access the internet and resolve host names just fine, either because the custom DNS (Google's 8.8.8.8, 8.8.8.4) I have specified in my router's DHCP settings gets pushed to the client, or because the client has the above DNS servers hard-coded (I think there are some devices where I have specified DNS manually).
The router ITSELF though is unable to resolve host names, resulting in the familiar 'Bad address' message. This means that nslookup does not work, ddns fails to update and so on...
Example:
root@homeRouter:/tmp# nslookup google.com
Server: 127.0.0.1
Address 1: 127.0.0.1 localhost
nslookup: can't resolve 'google.com': Name or service not known
root@homeRouter:/tmp# nslookup google.com 8.8.8.8
Server: 8.8.8.8
Address 1: 8.8.8.8
nslookup: can't resolve 'google.com': Name or service not known
====================================================================
cat /tmp/log/myddns_ipv4.log
143954 : ************ ************** ************** **************
143954 note : PID '1747' started at 2017-06-22 14:39
143954 : uci configuration:
ddns.myddns_ipv4.domain='********[redacted]********'
ddns.myddns_ipv4.enabled='1'
ddns.myddns_ipv4.interface='wan'
ddns.myddns_ipv4.ip_network='wan'
ddns.myddns_ipv4.ip_source='network'
ddns.myddns_ipv4.password='********[redacted]********'
ddns.myddns_ipv4.retry_interval='2'
ddns.myddns_ipv4.retry_unit='minutes'
ddns.myddns_ipv4.service_name='domains.google.com'
ddns.myddns_ipv4.use_logfile='1'
ddns.myddns_ipv4.use_syslog='2'
ddns.myddns_ipv4.username='********[redacted]********'
ddns.myddns_ipv4=service
143954 : ddns version : 2.4.3-2
143954 : verbose mode : 0 - run normal, NO console output
143956 : check interval: 600 seconds
143956 : force interval: 259200 seconds
143956 : retry interval: 120 seconds
143956 : retry counter : 0 times
143956 : No old process
143956 : last update: never
143956 : Detect registered/public IP
143956 : #> /usr/bin/nslookup '********[redacted]********' >/var/run/ddns/myddns_ipv4.dat 2>/var/run/ddns/myddns_ipv4.err
143956 ERROR : BusyBox nslookup error: '1'
143957 : nslookup: can't resolve '********[redacted]********': Name or service not known
143957 : Detect registered/public IP
143957 : #> /usr/bin/nslookup '********[redacted]********' >/var/run/ddns/myddns_ipv4.dat 2>/var/run/ddns/myddns_ipv4.err
143957 ERROR : BusyBox nslookup error: '1'
143957 : nslookup: can't resolve '********[redacted]********': Name or service not known
143957 WARN : Get registered/public IP for '********[redacted]********'failed - retry 1/0 in 120 seconds
144157 : #> /usr/bin/nslookup '********[redacted]********' >/var/run/ddns/myddns_ipv4.dat 2>/var/run/ddns/myddns_ipv4.err
144157 ERROR : BusyBox nslookup error: '1'I am providing below the current configuration on all the relevant files and I'm hoping you can shed some light here:
/etc/resolv.conf
nameserver 127.0.0.1
nameserver 8.8.8.8
nameserver 8.8.4.4cat /etc/hosts
127.0.0.1 localhostcat /etc/config/network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fde1:ddd7:8a0b::/48'
config interface 'lan'
option ifname 'eth0.1'
option force_link '1'
option type 'bridge'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
option delegate '0'
config interface 'wan'
option ifname 'eth0.2'
option _orig_ifname 'eth0.2'
option _orig_bridge 'false'
option proto 'pppoe'
option username '********[redacted]********'
option password '********[redacted]********'
option peerdns '0'
option dns '8.8.8.8 8.8.4.4 208.67.222.222'
config interface 'wan6'
option ifname 'eth0.2'
option _orig_ifname 'eth0.2'
option _orig_bridge 'false'
option proto 'dhcp'
option peerdns '0'
option dns '2001:4860:4860::8888 2001:4860:4860::8844'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0t 2 3 4 5'
config switch_vlan
option device 'switch0'
option vlan '2'
option ports '0t 1'
config interface 'vdsl_modem'
option proto 'static'
option ifname 'eth0.2'
option ipaddr '192.168.0.2'
option netmask '255.255.255.0'
option gateway '192.168.0.1'cat /etc/config/dhcp
config dnsmasq
option domainneeded '1'
option boguspriv '1'
option localise_queries '1'
option rebind_protection '1'
option rebind_localhost '1'
option local '/lan/'
option expandhosts '1'
option authoritative '1'
option readethers '1'
option leasefile '/tmp/dhcp.leases'
option resolvfile '/tmp/resolv.conf.auto'
option localservice '1'
option strictorder '1'
list server '8.8.8.8'
list server '8.8.4.4'
list server '208.67.222.222'
option domain 'gd5.local'
config dhcp 'lan'
option interface 'lan'
option start '100'
option limit '150'
option leasetime '12h'
list dhcp_option '1,255.255.255.0 3,192.168.1.1 6,8.8.8.8,8.8.4.4'
config dhcp 'wan'
option interface 'wan'
option ignore '1'
config odhcpd 'odhcpd'
option maindhcp '0'
option leasefile '/tmp/hosts/odhcpd'
option leasetrigger '/usr/sbin/odhcpd-update'root@homeRouter:/tmp# cat /tmp/resolv.conf
search gd5.local
nameserver 127.0.0.1cat /tmp/resolv.conf.auto
# Interface wan
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver 208.67.222.222
# Interface wan_6
nameserver 2a02:587:101:0:212:205:212:205
nameserver 2a02:587:101:0:195:170:0:1cat resolv.conf.ppp
nameserver 212.205.212.205
nameserver 195.170.0.1Please help, por favor!