From Snaps and NFS /home
$ cat /etc/apparmor.d/tunables/home | grep -v '#'
@{HOME}=@{HOMEDIRS}/*/ /root/
@{HOMEDIRS}=/home/
include <tunables/home.d>
$ cat /etc/apparmor.d/tunables/home.d/* | grep -v '#'
@{HOMEDIRS}+=/home/
So this doesn’t help. When I start firefox I get
May 5 15:35:05 jammy kernel: [ 2783.608909] audit: type=1400 audit(1651757705.831:189): apparmor="DENIED" operation="sendmsg" profile="/usr/lib/snapd/snap-confine" pid=12752 comm="snap-confine" laddr=162.38.80.15 lport=898 faddr=162.38.151.4 fport=2049 family="inet" sock_type="stream" protocol=6 requested_mask="send" denied_mask="send"