I have enabled IPv6 on the ER7206 Router, and configured IPv6 DHCP on my subnets. The wired connections are all still working perfectly. But the Wireless EAP325-Wall connections are unusably slow, seem to block communication.

The speed drops from 400MBit/s to about 200Kbps, with long delays and failures to connect.

I have 5 of these units, and they all exhibit the same problem.

Reverting these to firmware 3.1.1 (which does not claim to support IPv6) solves the issue. This removes the ability for the EAP to be assigned an IPv6 address itself, but the clients still get an IPv6 address, and seem to work ok.

I have actually been trying to figure out an issue with impossibly slow Apple AirPrint printing for months, which I think was also IPv6 (link-local) related. Reverting to EAP firmware 3.1.1 has also fixed this problem!

I think we need a firmware fix for these devices.