destination unreachable (port unreachable)

Hello: FreeRadius was working perfectly with EAP/MD5 a few weeks ago here. But some providers came here to offer a NAC solution and messed with the network configuration. Authentication stopped working, and by using a sniffer we realised that packets get to the freeRADIUS server, to which it responds with a challenge but apparently that challenge never gets back to the switch and it sends a "destination unreachable (port unreachable)" message. Any ideas why that might happen? Thanks -- View this message in context: http://www.nabble.com/destination-unreachable-%28port-unreachable%29-tf48835... Sent from the FreeRadius - User mailing list archive at Nabble.com.