Since #debian 11 is nearing EOL I was looking into what it would take to update my router. I was pleased to see that #unifi has sorted out whatever licensing issues they had with #mongodb and now support versions greater than 3.6. Sadly, the newest version of mongodb supported in debian 12 is 5.0 which also happens to require #avx extensions which my older Celeron CPU doesn't have. So, it looks like I'll have to invest in new hardware. I guess on the bright side I can keep the old box around as-is as an emergency spare and start the new one from a fresh install instead of crossing my fingers and doing an in-place upgrade.