Server flooded with 'UDP_Write: Network is Unreachable"

[Dos-Boss]

"UDP_Write: Network is unreachable ([2604:180:f1:0:0:0:0:de]:27950)"

Been seeing the above flooding my dedicated server. I'm guessing this is a master server that's no longer up.

Where can we see/alter the list of master servers currently in use?
Assuming that's what the issue is.

Cheers!

[Dos-Boss]

got to the bottom of it "dpmaster.deathmask.net:27950" doesn't appear to be working as expected currently.

clearing 'net_masterextra2' has resolved.

[Shpoike]

as a general rule, dns lookups have a tendency to omit ipv6 addresses when the host has no actual ipv6 connectivity (which normally saves timeouts and hoping that the application rolls over and also tries an ipv4 address instead/too). I don't know why that's failing.
It also shouldn't be flooding, it should be limited to just one instance of it every couple of mins... but if the server is otherwise idle then yeah there won't be anything else getting printed. :|

your other option is sv_public 0 and then manually register it with whatever site other engines use, which would be what you'd need to do with the upstream quakespasm engine anyway (but without the port forwarding shenanigans).
If your server is listed at [https://master.frag-net.com:27950/game/UNKNOWN] and stays there instead of under the real gamedir, then sv_public 1 ain't doing anything for you anyway.