WPA problems

RB411AH with v5.0rc4 using a R2n card. I’m borrowing the hardware to test it, so I didn’t want to attempt a different software version unless absolutely necessary.

What I really want to do is set up an access point using WPA EAP with TKIP authenticating against our IAS server using PEAP and MSCHAPv2.

However, I cannot get WPA EAP, WPA PSK, or WPA2 EAP to work with either TKIP or AES. All of these configurations seem to authenticate fine (the IAS server logs an authenticated request for both EAP protocols), but they fail to get an IP address and eventually disconnect.

WPA2 PSK, with nothing else changed, works as expected.

Any suggestions?