Hi All,

I just noticed my resolv.conf is topped up with the nameservers of the 
wireless LAN I happen to be associated at the time and my wired ethernet 
nameserver(s) are pushed further down.  This happens despite the fact that I 
have configured my wired ethernet to have a lesser priority than the wired NIC.

For example:

less /etc/resolv.conf 
# Generated by dhcpcd from wlan0.dhcp, enp11s0.dhcp
# /etc/resolv.conf.head can replace this line
domain openwifi
nameserver 192.168.22.22
nameserver 192.168.22.23
nameserver 10.10.10.254
# /etc/resolv.conf.tail can replace this line

The first 3 non-commented entries were produced by wlan0, demoting my wired 
ethernet nameserver.

ip route show
default via 10.10.10.254 dev enp11s0  metric 10 
default via 10.160.95.1 dev wlan0  metric 20 
10.10.10.0/24 dev enp11s0  proto kernel  scope link  src 10.10.10.7  metric 10 
10.160.95.0/29 dev wlan0  proto kernel  scope link  src 10.160.95.2  metric 20 
127.0.0.0/8 dev lo  scope host 

If I am associated, but not authenticated with the wireless LAN, any URLs I 
try to visit will be queried with the 192.168.22.2* nameserver, before it 
times out and 10.10.10.254 takes over.

Waiting for URLs to resolve becomes tedious after a while.  Is there a way to 
prioritise nameservers so that the NIC metric is respected, whenever the 
resolv.conf content is updated?

-- 
Regards,
Mick

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