[nsd-users] NSD not reachable over IPv6 without ip-address option
Pim Kunis
pim at kunis.nl
Fri Jan 6 17:41:07 UTC 2023
Hi,
I have a dual-stack IPv4/IPv6 server on which I run NSD. However,
without adding the "ip-address" option in nsd.conf, NSD does not respond
to IPv6 queries. It does respond to IPv4 queries. Also, it does respond
to requests from the same machine to ::1.
Below you can see that the NSD is indeed listening to UDP port 53 on
IPv6 on the wildcard address:
> root at lewis:/etc/nsd# ss -ulpn sport inet6:53
> State Recv-Q Send-Q
> Local Address:Port Peer
> Address:Port Process
> UNCONN 0 0 [::]:53 [::]:*
> users:(("nsd: server 4",pid=16052,fd=4),("nsd: server
> 3",pid=16051,fd=4),("nsd: server 2",pid=16050,fd=4),("nsd: server
> 1",pid=16049,fd=4),("nsd: main",pid=16048,fd=4),("nsd:
> xfrd",pid=16046,fd=4))
Does anybody know what could be the problem?
Kind regards,
Pim Kunis
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