When the first nameserver in /etc/resolv.conf is using IPv6
but IPv6 connectivity is broken,
no fallback to other reachable IPv4 nameservers happens
Happens with and without nscd running.


> cat /etc/resolv.conf
nameserver 2620:113:80c0:8080:10:160:0:1
nameserver 10.160.2.88

> getent hosts belana.suse.de
2620:113:80c0:8080:10:160:4:219 belana.suse.de

> getent ahosts belana.suse.de
2620:113:80c0:8080:10:160:4:219 STREAM belana.suse.de
2620:113:80c0:8080:10:160:4:219 DGRAM  
2620:113:80c0:8080:10:160:4:219 RAW    
10.160.4.219    STREAM 
10.160.4.219    DGRAM  
10.160.4.219    RAW
> sudo ip addr del 2620:113:80c0:8080:10:160:4:191/64 dev em1
> getent ahosts belana.suse.de
>