[BPI-R3] [BPi-R3-Mini] Imagebuilder R3 ArchlinuxArm, linux-rolling-stable

My bridge-fastpath patch-set is now added to my rolling-stable branch for the bpi-r3/r64. However, one does need to add the nftables rules manually.

Note that there are also some fixes that apply to the normal (forward-) fastpath. Also, the L2-roaming issue is addressed.

Note: To bridged-fastpath pppoe, pppoe-in-q and q-in-q, one needs to add a conntrack zone to the traffic, helping conntrack to know that all used vlan’s and all pppoe traffic are separated. This should actually already be done for normal vlan traffic, but there is no hard restriction.

I think I will continue upstreaming after the coming merge window, it may take quite some time, so I’ve added it to my kernel fork, not waiting for the upstream…