Automatically forcing port speed at system boot

Question

I want to execute

ethtool -s wan0 advertise 00c

at system boot, before networking comes up. The only thing I can come up with is to throw a systemd service, WantedBy=basic.target.

But wondering if there isn't anything already that runs at system boot, whose purpose is something like that. Anyone know of a better way? rc-local.service runs after network.target, that's too late, here.

Answer 1

Assuming you are using ifcfg-* files, there is an option called ETHTOOL_OPTS that allows you to set various ethtool settings when the network gets brought up.

if you need multiple settings you can do it like this "-s ${DEVICE} advertise 00c ; "