Routing through a cable interface that has a 10.x address as its primary ip address would be my first guess, esp. due to the 24.x address. ! int cable3/0 ip address 10.x.x.x. x.x.x.x.x ip address public.for.cpe.equip mask.mask.mask.mask secondary cheers, Mark Turpin Charter NOC mturpin@chartercom.com -----Original Message----- From: Simon Higgs [mailto:simon@higgs.com] Sent: Friday, January 25, 2002 8:47 PM To: nanog@merit.edu Subject: Routing through non-addressable space??? Can someone explain this trace to me. How on earth did the 10.0.0.0 network get inserted into the last hop? # IP address Host name Round trip time 4 24.130.2.243 GSR1-SRP4-0.lsanhe4.we.mediaone.net 64 ms 5 24.130.2.242 GSR2-SRP4-0.lsanhe3.we.mediaone.net 71 ms 6 12.125.98.13 Unavailable 79 ms 7 12.123.28.94 gbr2-p100.la2ca.ip.att.net 94 ms 8 No response 9 12.122.11.226 ggr1-p340.la2ca.ip.att.net 110 ms 10 192.205.32.246 att-gw.la.home.net 112 ms 11 24.7.74.182 wbb1-pos2-0.pop1.ca.home.net 120 ms 12 10.252.25.118 Unavailable 134 ms 13 209.125.128.80 Unavailable 141 ms Best Regards, Simon -- ### "The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from all computers."