Comment # 19 on bug 1092352 from Andrei Borzenkov

I switched Leap 42.3 to NetworkManger instead of wicked and after reboot I got
/etc/resolv.conf.netconfig and /etc/resolv.conf created directly by
NetworkManager. In logs I have

May 19 08:28:40 leap423 NetworkManager[1265]: <info>  Networking is enabled by
state file
May 19 08:28:41 leap423 dns-resolver[1851]: ATTENTION: You have modified
/etc/resolv.conf. Leaving it untouched...
May 19 08:28:41 leap423 dns-resolver[1862]: You can find my version in
/etc/resolv.conf.netconfig
May 19 08:28:42 leap423 NetworkManager[1265]: <13>May 19 08:28:41 dns-resolver:
ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched...

And resolv.conf says

# Generated by NetworkManager
search testdom
nameserver 10.0.2.3

Still I would expect NM to continue to generate resolv.conf also after update
just like it does with 42.3?