Host name lookup failure using hostbased authentication

[Thomas Köller]

Am 23.10.23 um 02:57 schrieb Darren Tucker:
> Suggestions:
>   - "host" does DNS lookups, but is your system's nsswitch.conf or
> equivalent actually configured to use DNS?
Yes, it is:
hosts:      myhostname resolve [!UNAVAIL=return] files dns

I tried to verify correct nss operation using getent. This is what I got:

[thomas at sarkovy ~]$ getent ahostsv4 htpc.koeller.dyndns.org
192.168.0.2     STREAM htpc.koeller.dyndns.org
192.168.0.2     DGRAM
192.168.0.2     RAW
[thomas at sarkovy ~]$ getent hosts 192.168.0.2
192.168.0.2     htpc.koeller.dyndns.org

>   - have you turned off DNS lookups in sshd with "UseDNS no" in sshd_config?
No

>   - you could try setting "HostbasedUsesNameFromPacketOnly yes" in sshd_config.
I know, but I do not want to do that.