routin loop

[Stephen Stuart]

> 
> traceroute -ip6 5f03:1200:9e7d:6000::1c10:30d1
> 1 [FE80::CC7B:02EC], time = 167 ms.
> 2 [5F00:6D00:C01F:0700:0001:0060:3E11:6770], time = 164 ms.
> 3 [FE80::CC7B:02EC], time = 140 ms.
> 4 [5F00:6D00:C01F:0700:0001:0060:3E11:6770], time = 171 ms.

I'm hops 1 and 3, and I think I fixed this by directing traffic to LUT
and IFB through NRL instead of CISCO, but my traceroute now dies at
IFB:

% traceroute6 5f03:1200:9e7d:6000::1c10:30d1
traceroute to 5f03:1200:9e7d:6000::1c10:30d1 (5F03:1200:9E7D:6000::1C10:30D1), 30 hops max, 24 byte packets
 1  gw.ipv6.pa-x.dec.com (5F00:2100:CC7B::12:0:F842:142C)  2.928 ms  1.952 ms  0.976 ms
 2  buzzcut.ipv6.nrl.navy.mil (5F00:3000:84FA:5A00::5)  89.744 ms  88.416 ms  87.84 ms
 3  ::194.105.166.254 (::194.105.166.254)  1403.25 ms  408.544 ms *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *


> traceroute -ip6 5f01:2500:83e1:0:1:40:b40:728b
> 1 *
> 2 [FE80::CC7B:02EC], time = 249 ms.
> 3 [5F02:3000:C020:AE00:201D::0007], time = 207 ms.
> 4 [FE80::84B1:7E9D], time = 367 ms.
> 5 [FE80::CC7B:02EC], time = 503 ms.
> 6: *
> 7 [FE80::84B1:7E9D], time = 597 ms.
> 8 [FE80::CC7B:02EC], time = 574 ms.
> 
> It seems that we have plenty of these nowadays ;(

Hops 2, 5, and 8 were me, and I was sending the traffic back to you
(BAY). Looking at the registry entry for ESNET, it appeared that the
right thing to do was for me to direct the traffic toward CISCO; I did,
and:

% traceroute6 5f01:2500:c680:200:0:800:2bbc:f1ec
traceroute to 5f01:2500:c680:200:0:800:2bbc:f1ec (5F01:2500:C680:200::800:2BBC:F1EC), 30 hops max, 24 byte packets
 1  gw.ipv6.pa-x.dec.com (5F00:2100:CC7B::12:0:F842:142C)  1.952 ms  0.976 ms  0.976 ms
 2  6bone-router.cisco.inner.net (5F00:6D00:C01F:700:1:60:3E11:6770) 4.88 ms *  5.856 ms
 3  esnet-v6r1.es.net (5F01:2500:C680:200::800:2BBC:F1EC)  16.592 ms  27.328 ms  15.616 ms

Can you check to see if you still see a loop?

Stephen