issue: warning: so-rcvbuf 1048576 was not granted <<Solved>>

[f3bandit]

Versions

• Pi-hole: v5.3.1
• AdminLTE: v5.5?
• FTL: v5.8.1

Platform

Ubuntu 20.04

Some people are getting the issue:
[1626249031] unbound[110586:0] warning: so-rcvbuf 1048576 was not granted. Got 425984. To fix: start with root permissions(linux) or sysctl bigger net.core.rmem_max(linux) or kern.ipc.maxsockbuf

so I i would add in the documentation:
run unbound from the cli
and if you receive the above error:
run sysctl -w net.core.rmem_max=1048576 from the cli

I know this is dumb and most linux pros know this. but alot of us are noobs like me
and scouring the internet for the answer. but none of them listed this as the fix.
most likely because the first part of the error states to run unbound as root.
which is probably not a good idea or it already is and that won't fix the problem.
idk like I said I'm a newb and still learning. and have no idea if they have it set to
run as root or not. But this fixed it for me, And alot of people don't know where to
look or how to find the answer. so I figured I'd ask you guys to add it to the
documentation for other linux retards like me. thx