NETGEAR Nighthawk X6 (R8000) and OpenWrt SNAPSHOT (and DSA)

Hello!
I experimentally installed SNAPSHOT r18321-5f05795aa7 on NETGEAR Nighthawk X6 (R8000). Everything works, but three network cards eth0 (down), eth1 (down), eth2 (up) are visible in the system.

root@OpenWrt:~# ls -l  /sys/class/net
lrwxrwxrwx    1 root     root             0 Dec 14 14:52 br-lan -> ../../devices/virtual/net/br-lan
lrwxrwxrwx    1 root     root             0 Jan  1  1970 eth0 -> ../../devices/platform/18000000.axi/bcma0:3/net/eth0
lrwxrwxrwx    1 root     root             0 Jan  1  1970 eth1 -> ../../devices/platform/18000000.axi/bcma0:4/net/eth1
lrwxrwxrwx    1 root     root             0 Jan  1  1970 eth2 -> ../../devices/platform/18000000.axi/bcma0:5/net/eth2
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lan1 -> ../../devices/platform/18007000.ethernet-switch/net/la
n1                                                                                                                      
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lan2 -> ../../devices/platform/18007000.ethernet-switch/net/la
n2                                                                                                                      
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lan3 -> ../../devices/platform/18007000.ethernet-switch/net/la
n3                                                                                                                      
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lan4 -> ../../devices/platform/18007000.ethernet-switch/net/la
n4                                                                                                                      
lrwxrwxrwx    1 root     root             0 Jan  1  1970 lo -> ../../devices/virtual/net/lo
lrwxrwxrwx    1 root     root             0 Dec 14 15:20 pppoe-wan -> ../../devices/virtual/net/pppoe-wan
lrwxrwxrwx    1 root     root             0 Jan  1  1970 wan -> ../../devices/platform/18007000.ethernet-switch/net/wan
lrwxrwxrwx    1 root     root             0 Dec 14 14:52 wg0 -> ../../devices/virtual/net/wg0
lrwxrwxrwx    1 root     root             0 Dec 14 14:52 wlan0 -> ../../devices/platform/18000000.axi/bcma0:7/pci0000:0
0/0000:00:00.0/0000:01:00.0/net/wlan0                                                                                   
lrwxrwxrwx    1 root     root             0 Dec 14 14:52 wlan1 -> ../../devices/platform/18000000.axi/bcma0:8/pci0001:0
0/0001:00:00.0/0001:01:00.0/0001:02:01.0/0001:03:00.0/net/wlan1                                                         
lrwxrwxrwx    1 root     root             0 Dec 14 14:52 wlan2 -> ../../devices/platform/18000000.axi/bcma0:8/pci0001:0
0/0001:00:00.0/0001:01:00.0/0001:02:02.0/0001:04:00.0/net/wlan2

Question: what are the eth0 and eth1 devices (both down)?
The issue is related to the fact that the MAC address is incorrectly set for eth2 and as a consequence lan1-lan4 (00:FF:FF:FF:FF:FF). How correct is this? I understand that these are virtual DSA ports.