[PVE-User] Routing inside LXC container (System V)

[Dominik Csapak]

Hi,

for current ubuntu linux containers, we use systemd-networkd to 
configure their network

so you should be able to use systemd-networkd to setup your routes
with overrides of the .network files in /etc/systemd/network

e.g. you can add an override for /etc/systemd/network/foo.network with 
conf files in /etc/systemd/network/foo.network.d/

see the systemd-networkd manpage for more info on this and how
to set custom routes there