Some interfaces have a VLAN modifier like :t in lan1:t, this modifier
should be removed from the interface before calling preinit_ip_config().
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Vlan subinterface was never brought up when using vlan-based preinit network.
Tested forcing ifname="" before preinit_ip() on a Tp-Link Archer C5v4.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>