[IPQ40XX] NBG6617: WAN connectivity loss when VLANs are added?

[jeff]

@Borromini

Anybody seen something similar with ipq40xx

IPQ40xx Switch Config "Strangeness" (swconfig)

Impacting EA8300 and apparently EA6350v3, the IPQ40xx switch in these devices seems to have a mind of its own about VLANs and configuration. From what I've read, this is a "non-standard" switch that may require additional development work to have functional VLANs. It seems as though the two Ethernet phys are internally "wired" to VLANs off switch port 0. These devices appear to be dual-NIC devices, which may be almost certainly are a different wrinkle than dealt with in other threads / patches…

@Borromini

know how to fix/work around this?

I haven't yet catalogued what works and doesn't work with the "stock" implementation of the switch and Ethernet combinations yet.

Not yet, short of patching out the VLAN tagging in the source code. DSA/qca8k/ipqess was not the answer, at least as of a couple months ago. At that time, even upstream Linux on 5.x had not figured out how to deal with VLANs (at all), or with dual-MAC devices.