Hello, On Wed, May 03, 2023 at 07:50:30PM -0400, Lee wrote: > I'm at a loss for how to figure out why my settings aren't taking effect. > > $ head /etc/sysctl.d/local.conf
[…] > # accept router advertisements > net/ipv6/conf/enp1s0/accept_ra = 1 Is it possible that enp1s0 didn't yet exist at the time that systemd-sysctl.service ran? To check, you could instead set the key net/ipv6/conf/default/accept_ra = 1 then any new interfaces should get accept_ra=1 as they are created. Though when I look at my net/ipv6/conf/default/accept_ra it is already set to 1, so another possibility is that you have something that is setting net/ipv6/conf/enp1s0/accept_ra back to 0 after systemd-sysctl.service already set it to 1. NetworkManager is known to do this: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1025073 So, what are you using to manage enp1s0? Cheers, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting