Xiaomi Router 3G V2 - VLAN with DSA

[NPeca75]

Hi
same problem here with rb750gr3, same MT7621

Vlans are working with kernel 4.x / swconfig
but with 5.x and DSA there is no joy

same problem in this thread:

ER-X-SFP: VLANs not working properly with kernel 5.4

Hey all, I have built and started testing PR https://github.com/openwrt/openwrt/pull/2901 and I must say that I am excited to try out the features and stability of the new kernel and underlying changes to the codebase. Unfortunately I am having problems with VLANs. In order to really be able to test the router under load, VLAN support is needed. Here is a reduced and redacted version of my network config I have tried various combinations of config options auto '1' and force_link '1' This …