SixXS::Sunset 2017-06-06

Ticket ID: SIXXS #10567466
Ticket Status: Resolved

PoP: 

Routing gone loop
[de] Shadow Hawkins on Tuesday, 26 November 2013 12:09:42
Dear Sixxs staff. From inside of my tunnel to the rest of the world, about 5% of all requests get routed at all. Usually ping6 results with "Destination unreachable: Address unreachable". Routing from outside to my tunnel shows that uslax02 has some internal routing loop issues. See traceroute66 attached, that's how at least my german home connection to the tunnel gets routed. But because the routing issue is not in germany but cleraly nearby uslax02 itself, I guess others have similar routing experiences.
:~$ traceroute6 cl-61.lax-02.us.sixxs.net traceroute to cl-61.lax-02.us.sixxs.net (2607:f878:fe00:3c::2) from 2001:470:1f0b:212:885a:9ad1:1516:4bd3, 30 hops max, 16 byte packets 1 goli-wrt.internal.g4n.de (2001:470:1f0b:212::1) 5.516 ms 0.638 ms 0.551 ms 2 goli-1.tunnel.tserv6.fra1.ipv6.he.net (2001:470:1f0a:212::1) 19.474 ms 23.914 ms 15.827 ms 3 v320.core1.fra1.he.net (2001:470:0:69::1) 17.652 ms 23.583 ms 24.92 ms 4 100gigabitethernet3-1.core1.ams1.he.net (2001:470:0:2d4::1) 33.846 ms 27.638 ms 46.173 ms 5 amsix.ipv6.r3.am.hwng.net (2001:7f8:1::a501:2989:1) 35.093 ms 24.129 ms 24.874 ms 6 1-3.ipv6.r1.lo.hwng.net (2001:4de0:1000:36::2) 49.012 ms 29.42 ms 31.456 ms 7 ve10.ipv6.r2.lo.hwng.net (2001:4de0:1000:24::2) 30.437 ms 29.37 ms 38.959 ms 8 1-3.ipv6.r2.ny.hwng.net (2001:4de0:1000:3::2) 114.585 ms 123.325 ms 125.402 ms 9 6-4.ipv6.r1.ch.hwng.net (2001:4de0:1000:1f::1) 149.694 ms 156.423 ms 145.418 ms 10 2001:4de0:1000:28::2 (2001:4de0:1000:28::2) 151.803 ms 191.473 ms 306.954 ms 11 2001:4de0:3102:1::2 (2001:4de0:3102:1::2) 153.6 ms 139.593 ms 144.653 ms 12 2607:f878::147 (2607:f878::147) 154.53 ms 154.095 ms 151.546 ms 13 2607:f878::159 (2607:f878::159) 222.703 ms 243.347 ms 236.088 ms 14 2607:f878::189 (2607:f878::189) 224.662 ms 233.823 ms 223.314 ms 15 uslax02.sixxs.net (2607:f878:3:400::2) 223.214 ms 225.403 ms 223.935 ms 16 2607:f878:3:a::1 (2607:f878:3:a::1) 227.314 ms 228.768 ms 228.827 ms 17 uslax02.sixxs.net (2607:f878:3:400::2) 247.9 ms 229.162 ms 227.816 ms 18 2607:f878:3:a::1 (2607:f878:3:a::1) 235.783 ms 237.25 ms 231.613 ms 19 uslax02.sixxs.net (2607:f878:3:400::2) 229.201 ms 235.313 ms 223.869 ms 20 2607:f878:3:a::1 (2607:f878:3:a::1) 233.879 ms 225.207 ms 227.412 ms 21 uslax02.sixxs.net (2607:f878:3:400::2) 225.737 ms 246.298 ms 227.519 ms 22 2607:f878:3:a::1 (2607:f878:3:a::1) 247.911 ms 226.01 ms 232.841 ms 23 uslax02.sixxs.net (2607:f878:3:400::2) 228.091 ms 239.784 ms 242.612 ms 24 2607:f878:3:a::1 (2607:f878:3:a::1) 237.558 ms 245.194 ms 238.915 ms 25 uslax02.sixxs.net (2607:f878:3:400::2) 224.837 ms 227.194 ms 227.053 ms 26 2607:f878:3:a::1 (2607:f878:3:a::1) 234.604 ms 226.946 ms 228.085 ms 27 uslax02.sixxs.net (2607:f878:3:400::2) 226.556 ms 236.254 ms 224.412 ms 28 2607:f878:3:a::1 (2607:f878:3:a::1) 227.102 ms 231.11 ms 225.343 ms 29 uslax02.sixxs.net (2607:f878:3:400::2) 226.48 ms 226.904 ms 223.858 ms 30 2607:f878:3:a::1 (2607:f878:3:a::1) 229.549 ms 235.507 ms 227.353 ms
And ping6 from my home networks shows comparable results.
:~$ ping6 2607:f878:fe00:3c::2 PING 2607:f878:fe00:3c::2(2607:f878:fe00:3c::2) 56 data bytes From 2607:f878:3:a::1 icmp_seq=1 Time exceeded: Hop limit From 2607:f878:3:a::1 icmp_seq=2 Time exceeded: Hop limit From 2607:f878:3:a::1 icmp_seq=3 Time exceeded: Hop limit From 2607:f878:3:a::1 icmp_seq=4 Time exceeded: Hop limit ^C
My local (home) connection is either 2001:470:1f0b:212:885a:9ad1:1516:4bd3 or 2001:470:1f0b:212::1, that's the net part I control. My sixxs tunnel part is 2607:f878:fe00:3c::2. I decided that this was not a duplicate of the previous uslax02 loop issue from ~june since * you mentioned it as resolved * it just worked the last month * there are different nodes involved Kind regards, Stephan.

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