Comment # 33 on bug 1092352 from Jonathan Kang

(In reply to Marius Tomaschewski from comment #30)
> This issue is nothing new and will persist as long as NetworkManager
> continues to sometimes break the policies and write the files directly
> instead to use netconfig.

I see. I'll propose a patch to NM fixing this. Make NetworkManager force update
/etc/resolv.conf using netconfig when netconfig exits with code 20.

One question about this. NetworkManager spawns
> /sbin/netconfig modify --service NetworkManager
and writes
> INTERFACE='NetworkManager'
> DNSSEARCH='abc'
> DNSSERVERS='xyz'
to netconfig.
To force update /etc/resolv.conf using netconfig, should NetworkManager spawn
> /sbin/netconfig modify -f --service NetworkManager
and write related information to netconfig?

> 
> You can call "netconfig update -f" to enforce to update the files:
> 
And for anyone who is having this issue, run "netconfig update -f" to update
/etc/resolv.conf. You won't encounter this issue any more.