I have a working wireguard VPN setup with [Interface] ... # deactivate IPv6 on start of tunnel PostUp = sysctl -w net.ipv6.conf.all.disable_ipv6=1 PostUp = sysctl -w net.ipv6.conf.default.disable_ipv6=1 # reactivate IPv6 on stop of tunnel PostDown = sysctl -w net.ipv6.conf.all.disable_ipv6=0 PostDown = sysctl -w net.ipv6.conf.default.disable_ipv6=0 ... Starting it with wg-quick up ./wg0.conf works just fine. But imporing it through the networks GUI seems to loose the postup commands. Then the IPv6 traffic does not go trough the VPN (I learned a bit shocked). Is this known and intended? Is there a way to set postup in the GUI?