Strange source port filtering by Tinet

Daniel Verlouw daniel at bit.nl
Mon Jul 26 17:09:20 CEST 2010


Hi,

On Tue, 2010-07-20 at 14:24 +0200, Alexander Gall wrote:
> It turned out that Tinet already
> opened a ticket after my initial report last week but that didn't get
> through to me.  Anyway, a possible fix will be deployed tomorrow
> (hopefully).

seems this is fixed now on their Frankfurt peering router:

daniel at daniel:~$ traceroute6 -s 2001:7b8:3:1000:202:b3ff:fe1f:2a28
--sport=35072 -q1 -N1 -w1 ch1.dnsnode.net
traceroute to ch1.dnsnode.net (2001:67c:1010:2::53), 30 hops max, 80
byte packets
 1  fw1.office.bit.nl (2001:7b8:3:1000::1)  0.367 ms
 2  fw1-gw.jun1.bit-2a.network.bit.nl (2001:7b8:3:1c::3)  1.172 ms
 3  803.ge-0-1-0.jun1.fra4.network.bit.nl (2001:7b8:0:323::2)  5.742 ms
 4  de-cix.fra20.ip6.tiscali.net (2001:7f8::cb9:0:1)  19.697 ms
 5  xe-5-3-0.lon20.ip6.tinet.net (2001:668:0:2::1:1232)  35.260 ms
 6  xe-1-0-0.lon21.ip6.tinet.net (2001:668:0:2::1:142)  23.470 ms
 7  xe-5-3-0.lon10.ip6.tinet.net (2001:668:0:2::1:1642)  22.772 ms
 8  g0-0-123.tr2.tfm7.thn.linx.net (2001:668:0:3::4000:82)  20.262 ms
 9  2a01:40:1003:2::3 (2a01:40:1003:2::3)  22.757 ms
10  ch1.dnsnode.net (2001:67c:1010:2::53)  23.124 ms

but I'm still seeing issues through their London POP (which is fairly
odd because we connect directly to the same router as seen in hop 7
above):

daniel at daniel:~$ traceroute6 -s 2001:7b8:3:1000:202:b3ff:fe1f:2a28
--sport=35072 -q1 -N1 -w1 ch1.dnsnode.net
traceroute to ch1.dnsnode.net (2001:67c:1010:2::53), 30 hops max, 80
byte packets
 1  fw1.office.bit.nl (2001:7b8:3:1000::1)  0.290 ms
 2  fw1-gw.jun1.bit-2a.network.bit.nl (2001:7b8:3:1c::3)  0.402 ms
 3  806.ge-0-1-0.jun1.thn.network.bit.nl (2001:7b8:0:326::2)  22.418 ms
 4  *
 5  *
 6  *
 7  *^C

Anyone knows if they're still working on this?

  --Daniel.




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