On Sat, Sep 06, 2025 at 04:57:10AM +0000, Jeremy C. Reed wrote: > I found that later one of my network cards would connect but couldn't get an > IP via DHCP. > I read online that the ONT box uses 802.1Q tagging with VLAN 0. Later I > will try to sniff the connection to see if I see VLAN. And then figure out > how to strip or use it.
See vlan(4), it has an example for vlan ID 6 with a tlp(4), just replacing your physical interface and 6 with 0 should get you going. Some providers do this here too, sometimes with a (http) management interface for their device on a separate vlan ID (or w/o vlan tagging). Martin
