Hi, I've set up OpenWrt several times in the past so I'm not a 'complete' noob, although still a noob.

I have OpenWrt running perfectly on my WR1043ND, and I have set up OpenWrt on a HG556a Hardware version B in the past.

Right now I'm setting up OpenWrt on several HG556a Hardware version C to help out some other people.
I have the switch set with
VLAN 1 as 0 1 2 5t (ports 0, 1 & 2 are my LAN ports these work perfectly, 5 is internal)
VLAN 2 as 3 5t (port 3 being reconfigured as my WAN port)

All following the OpenWrt website for the HG556a, https://wiki.openwrt.org/toh/huawei/hg556a#switch_ports_for_vlans

I overrode the MAC address for my wan interface to be one higher than the lan interface.
Wifi is bridged to the lan interface.

But I have two issues
1) Wifi is has its MAC address the same as the MAC address of the wan interface.
2) the wan interface does not connect.

I have SSHed in to the router and run 'ifup wan'. In Luci I have pressed the 'connect' button next to the wan interface. But still no luck. The Status--> Overview screen still has the WAN as not connected.

My own HG556a hardware version B, is not set up now so I cannot copy the configuration file over.

Can anyone help?

Happy to send over whatever configuration screen dumps you require.



Yes I've searched through the OpenWrt forums, where this problem was manually solved with 'ifup wan', although the wan interface would not automatically connect and had to be manually connected every time the router was rebooted.