In answer to your query ... I think it is unlikely that the TTL exceeded reply has been completely filtered, though it's possible. Another possibility is that perhaps all outgoing packets are being rewritten to have a higher TTL? I suppose this would result in the start of all traceroutes slowly timing out... but higher TTL values (the 10th, 15th or 20th hop...) still being functional. If you like, try my (somewhat buggy, but functional!) traceroute implementation or another one that supports skipping the first few hops - ie: starting the traceroute from 6 hops away (TTL 6). ( http://pratyeka.org/ctrace/ - Perl based ) Otherwise, for the first few (8 or so?) hops you can set an option in the header of a standard ICMP ping to 'record route'. This is the -R option in standard unix traceroute. ------------- me@laptop:~$ ping -R 18.5.86.13 PING 18.5.86.13 (18.5.86.13) 56(124) bytes of data. 64 bytes from 18.5.86.13: icmp_seq=1 ttl=253 time=491 ms NOP RR: 192.168.0.2 18.5.31.217 18.5.86.13 18.5.86.13 192.168.0.1 192.168.0.2 64 bytes from 18.5.86.13: icmp_seq=2 ttl=253 time=493 ms NOP (same route) --- 18.5.86.13 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1007ms rtt min/avg/max/mdev = 491.761/492.690/493.620/1.164 ms ------------- - Walter