Proxmox URL becomes inaccessible and switches over to local IPv6

Ludus and proxmox were working nicely then after running for a day or so, the Proxmox URL changes to localhost in /opt/ludus/config.yml and proxmox is no longer accessible.

Looking at the listening ports:

mrpmillz@ludus:~$ sudo ss -lntp
State    Recv-Q    Send-Q       Local Address:Port       Peer Address:Port   Process
LISTEN   0         32             192.0.2.254:53              0.0.0.0:*       users:(("dnsmasq",pid=909,fd=7))
LISTEN   0         32               127.0.0.1:53              0.0.0.0:*       users:(("dnsmasq",pid=909,fd=9))
LISTEN   0         4096             127.0.0.1:85              0.0.0.0:*       users:(("pvedaemon worke",pid=1290,fd=6),("pvedaemon worke",pid=1288,fd=6),("pvedaemon worke",pid=1287,fd=6),("pvedaemon",pid=1286,fd=6))
LISTEN   0         128                0.0.0.0:22              0.0.0.0:*       users:(("sshd",pid=903,fd=3))
LISTEN   0         4096               0.0.0.0:111             0.0.0.0:*       users:(("rpcbind",pid=760,fd=4),("systemd",pid=1,fd=36))
LISTEN   2544      4096                     *:8006                  *:*       users:(("pveproxy worker",pid=315599,fd=6),("pveproxy worker",pid=313022,fd=6),("pveproxy worker",pid=306873,fd=6),("pveproxy",pid=1296,fd=6))
LISTEN   0         4096                     *:3128                  *:*       users:(("spiceproxy work",pid=297365,fd=6),("spiceproxy",pid=1303,fd=6))
LISTEN   0         128                   [::]:22                 [::]:*       users:(("sshd",pid=903,fd=4))
LISTEN   0         4096                  [::]:111                [::]:*       users:(("rpcbind",pid=760,fd=6),("systemd",pid=1,fd=38))

see:

LISTEN   2544      4096                     *:8006                  *:*       users:(("pveproxy worker",pid=315599,fd=6),("pveproxy worker",pid=313022,fd=6),("pveproxy worker",pid=306873,fd=6),("pveproxy",pid=1296,fd=6))

I have no idea what's causing this. If I hard reboot the mini PC by holding the power button and booting it back up, Proxmox becomes accessible again on 0.0.0.0:8006 for a while and then it gets broke again.

When trying to forward the port, got this error:

ssh -f -N -L 8006:127.0.0.1:8006 ludus
Enter passphrase for key 'REDACTED':

bind [::1]:8006: Cannot assign requested address

So as far as I can tell at 8:12pm on a Friday with brain fried, (need to eat dinner lolz) it seems that something is causing Ludus to change proxmox url to local IPv6 🤔