Hi, I'm not sure if I run into a Cisco or Freeradius issue here. I try to migrate from icradius to freeradius and everything worked in the new configuration when I tried with NTRadPing and so I'm switched the Cisco NAS to the new server. Unfortunately the NAS is ignoring the Access-Accept replies and always denies login attempts. That worked correctly with icradius and the NAS config changed only the ip address of the radius server. My first guess was an ip source issue but my server only has one ip address (and IPv6 ones but radiusd is only listening on 0.0.0.0) and freeradius is compiled with --with-udpfromto. Here are parts of my Cisco config: aaa authentication ppp default if-needed radius local aaa authorization network default radius local aaa accounting update newinfo aaa accounting exec default start-stop radius aaa accounting network default start-stop radius aaa accounting connection default start-stop radius radius-server configure-nas radius-server host a.b.c.d auth-port 1812 acct-port 1813 non-standard radius-server timeout 3 radius-server vsa send accounting I ran radiusd -X and saw that freeradius sent an Access-Accept reply to the NAS' ip address and source port. Any ideas? Thanks, Wolfgang