I recently got a new FIOS connection from Verizon.  There's a
fancy router that comes with the package.  It works well, except
when I do a traceroute via the router, every hop has the endpoint's
address (although there do seem to be the correct number of hops).
 
What would make traceroute do this?  Could it be some sort of NAT
misconfiguration?  (It's definitely the router, because if I use my
other connection, all is correct.)
 
Here's a sample:
 
pentium166:/etc 196 -> traceroute google.com
traceroute: Warning: google.com has multiple addresses; using 64.233.187.99
traceroute to google.com (64.233.187.99), 30 hops max, 40 byte packets
 1  64.233.187.99 (64.233.187.99)  1.823 ms  0.962 ms  1.164 ms
 2  64.233.187.99 (64.233.187.99)  5.745 ms  5.737 ms  5.699 ms
 3  64.233.187.99 (64.233.187.99)  7.066 ms  5.778 ms  5.709 ms
 4  64.233.187.99 (64.233.187.99)  7.093 ms  8.011 ms  8.181 ms
 5  64.233.187.99 (64.233.187.99)  7.152 ms  8.229 ms  8.192 ms
 6  64.233.187.99 (64.233.187.99)  7.141 ms  15.724 ms  8.191 ms
 7  64.233.187.99 (64.233.187.99)  19.643 ms  8.231 ms  20.656 ms
 8  64.233.187.99 (64.233.187.99)  29.431 ms  13.142 ms  13.183 ms
 9  64.233.187.99 (64.233.187.99)  13.824 ms  15.686 ms  15.678 ms
10  64.233.187.99 (64.233.187.99)  44.418 ms  15.446 ms  15.667 ms
11  64.233.187.99 (64.233.187.99)  14.439 ms  15.740 ms  15.635 ms
12  64.233.187.99 (64.233.187.99)  14.341 ms  15.654 ms  15.677 ms
13  64.233.187.99 (64.233.187.99)  26.864 ms  28.265 ms  28.145 ms
14  64.233.187.99 (64.233.187.99)  26.843 ms  33.212 ms  30.687 ms
15  64.233.187.99 (64.233.187.99)  29.527 ms  30.720 ms  30.711 ms
16  64.233.187.99 (64.233.187.99)  30.282 ms  30.709 ms  30.659 ms
pentium166:/etc 197 -> 
 
 
 
Michael D. Spence
Mockingbird Data Systems, Inc.