Destination port invalid

[Bassem Mettichi]

Hello,
i have an issue with the response packet sended from my freeradius server
to the NAS, a tcpdump on NAS side give this error message:


The accounting response message is unfound,The message destination port
invalid.ServerIP:0xac193c27 0x00000000 0x00000000
0x00000000,DstPort:31686,Correct Range:31671<=Port<=31685

Do you have any idea why freeradius choose this range port for response
packet?


Thanks
Bassem