Hello, My FreeRadius 2.2 is trying to proxy authentication to another radius server, but the reply I get is Access Challenge (11). I tried to google for that error but really get nothing. Here a tcpdump of the dialogue: 14:16:13.266719 00:0c:29:34:75:1c (oui Unknown) > f0:4d:a2:0c:0f:a3 (oui Unknown), ethertype IPv4 (0x0800), length 198: ldap.cs.ait.ac.th.1647 > eduroam-th.uni.net.th.radius: RADIUS, Access Request (1), id: 0x3b length: 156 0x0000: 4500 00b8 65a8 0000 4011 703a c029 aa06 E...e...@.p:.).. 0x0010: ca1c 7006 066f 0714 00a4 a508 013b 009c ..p..o.......;.. 0x0020: 346b 4b04 1c8b 6239 fe62 aecb faf8 f099 4kK...b9.b...... 0x0030: 0116 6775 6573 742d 6169 7440 756e 692e ..guest-ait@uni. 0x0040: 6e65 742e 7468 etc. hidden forsecurity net.th etc. 14:16:13.271033 f0:4d:a2:0c:0f:a3 (oui Unknown) > 00:0c:29:34:75:1c (oui Unknown), ethertype IPv4 (0x0800), length 109: eduroam-th.uni.net.th.radius > ldap.cs.ait.ac.th.1647: RADIUS, Access Challenge (11), id: 0x3b length: 67 0x0000: 4500 005f 1f3c 0000 3b11 bbff ca1c 7006 E.._.<..;.....p. 0x0010: c029 aa06 0714 066f 004b 7aea 0b3b 0043 .).....o.Kz..;.C 0x0020: a618 0ac0 99f6 2162 8997 7996 d6bc b5b7 ......!b..y..... 0x0030: 4f08 0102 0006 1920 5012 e641 225b 62b6 O.......P..A"[b. 0x0040: 9910 a5ed e9e7 6a4a fbad 1812 3dfc 0c96 ......jJ....=... 0x0050: 3dfe 1591 41d5 e623 3bab acf5 2103 30 =...A..#;...!.0 The other party seems even more cluless than I am so I really don't know where to seek for enlightment. Thanks in advance, Olivier --