Set vlan egress at interface up

Software SW help
1

Hello

Im having issues with setting vlan egress priority. the command via console works well this is the command

ip link set eth1.20 type vlan egress 0:3

But im trying to set it at boot on local startup after sleep 60 but doesnt work .
and the other issue its when the wan interface goes down i need to set it up again manually.
How i can set it up automatically with a script?

2

try with adding it to Firewall - Custom Rules (LuCI) since it the fw script provides awareness of changes in ifaces

3

doesnt work in custom rules i tried several commands and only works via terminal