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Re: Routing with 6to4 *and* a tunnel



On Wed, Jun 29, 2005 at 02:06:23PM +1000, Peter Chubb wrote:
> >>>>> "Paul" == Paul TBBle Hampson <Paul.Hampson@anu.edu.au> writes:

> Paul> On Tue, Jun 28, 2005 at 10:38:06AM -0700, Marc Singer wrote:
> >> On Tue, Jun 28, 2005 at 12:05:58PM +0200, Jeroen Massar wrote: > On
> >> Mon, 2005-06-27 at 15:27 -0400, Michael Richardson wrote:

> >> I thought that is what the endpoint was for, 192.88.99.1.  At
> >> least, that's how Craig Small describes it.

> >> <http://people.debian.org/~csmall/ipv6/setup624.html>

I just looked at this URL, and I'll also suggest the below, which is what I do
to have 6to4 interfaces come up with ppp0 on Keitarou.
http://lists.debian.org/debian-ipv6/2002/11/msg00024.html

> Paul> The problem with 192.88.99.1 is it depends on someone nearby
> Paul> offering up a 6to4 gateway, and advertising it, and the
> Paul> advertisements getting to you.

> The main problem appears to be that the routing tables are incomplete.
> If you're near AARNET, 192.88.99.1 should map to 192.231.212.5
> and you can use it as an endpoint instead of 192.88.99.1

That's an improvement. 184ms from Keitarou, 8ms from Yurika. This is weird,
because I can reach the tunnel broker without any US transit, but the 6to4
endpoint needs to cross the Pacific Ocean twice. My guess is that MCI is not
accepting the route advertisement of 192.231.212.5 (or 192.88.99.1) from Optus,
while Comindico does.

Is there an easy way to confirm this, or do I start emailing my upstream? Does
anyone know of a lookingglass for MCI? Optus's is at http://looking-glass.optus.net.au/
and _it_ can see a route to 192.231.212.0/24 via 61.88.128.90.

(Maybe I should take this to the AARNET ipv6 list? It's so low-traffic though,
I'm always afraid to post there.)

tbble@keitarou:~$ traceroute 192.231.212.5
traceroute to 192.231.212.5 (192.231.212.5), 30 hops max, 38 byte packets
 1  10.100.100.254 (10.100.100.254)  16.049 ms  13.589 ms  12.787 ms
 2  10.100.100.97 (10.100.100.97)  15.342 ms  14.496 ms  17.192 ms
 3  10.10.0.1 (10.10.0.1)  24.193 ms  17.904 ms  13.859 ms
 4  fastethernet1-0.hsrp77.bdr2.nort-cbr.officelink.net.au (203.10.77.4)  12.653 ms  12.194 ms  12.136 ms
 5  static-146-81.transact.net.au (202.55.146.81)  13.503 ms  12.806 ms  16.509 ms
 6  static-144-17.transact.net.au (202.55.144.17)  16.914 ms  13.257 ms  17.957 ms
 7  502.ATM2-0-0.GW2.CBR2.ALTER.NET (210.80.144.249)  21.870 ms  14.623 ms  13.892 ms
 8  422.AT-6-0-0.XR1.CBR2.ALTER.NET (210.80.32.185)  17.870 ms  18.797 ms  17.903 ms
 9  0.so-4-1-0.XR1.SYD2.Alter.Net (210.80.38.205)  20.334 ms  24.243 ms  25.670 ms
/
10  0.SO-3-2-0.TR1.SYD2.ALTER.NET (210.80.51.97)  23.799 ms  22.462 ms  19.736 ms
11  0.so-5-0-0.IR1.LAX12.Alter.Net (210.80.49.149)  178.083 ms  175.411 ms  177.083 ms
12  POS3-0.IR1.LAX9.ALTER.NET (137.39.31.226)  180.860 ms  179.299 ms  179.602 ms
13  0.so-5-2-0.TL1.LAX9.ALTER.NET (152.63.0.146)  181.257 ms  180.602 ms  199.342 ms
14  0.so-0-0-0.XL1.LAX9.ALTER.NET (152.63.115.137)  198.043 ms  187.031 ms  175.985 ms
15  POS6-0.BR3.LAX9.ALTER.NET (152.63.115.1)  177.365 ms  194.373 ms  175.090 ms
16  204.255.173.18 (204.255.173.18)  181.129 ms  196.715 ms  176.177 ms
17  p16-1-1-0.r20.lsanca01.us.bb.verio.net (129.250.2.8)  179.731 ms  178.436 ms  176.549 ms
18  p16-1-1-2.r21.mlpsca01.us.bb.verio.net (129.250.5.97)  184.236 ms  185.246 ms  184.240 ms
19  p64-0-0-0.r21.plalca01.us.bb.verio.net (129.250.5.48)  195.597 ms  221.174 ms  201.378 ms
20  p16-1-0-0.r00.plalca01.us.bb.verio.net (129.250.3.85)  227.020 ms  195.139 ms  188.754 ms
21  p4-0.aarnet.plalca01.us.bb.verio.net (129.250.10.226)  186.742 ms  187.734 ms  185.667 ms
22  pos3-1-0.bb1.a.syd.aarnet.net.au (202.158.194.73)  204.323 ms  227.009 ms  222.408 ms
\ == Should have transited like 10 through 14 below?
23  gigabitethernet3-0.bb3.a.syd.aarnet.net.au (202.158.194.114)  201.253 ms  190.487 ms  186.135 ms
24  192.231.212.5 (192.231.212.5)  186.223 ms  187.932 ms  185.927 ms

tbble@keitarou:~$ traceroute broker.aarnet.net.au
traceroute to broker1.a.syd.aarnet.net.au (202.158.196.131), 30 hops max, 38 byte packets
 1  10.100.100.254 (10.100.100.254)  16.225 ms  13.633 ms  12.165 ms
 2  10.100.100.97 (10.100.100.97)  58.887 ms  40.615 ms  23.277 ms
 3  10.10.0.1 (10.10.0.1)  20.953 ms  12.424 ms  12.947 ms
 4  fastethernet1-0.hsrp77.bdr2.nort-cbr.officelink.net.au (203.10.77.4)  35.596 ms  25.551 ms  25.371 ms
 5  static-146-81.transact.net.au (202.55.146.81)  23.273 ms  23.992 ms  21.493 ms
 6  static-144-17.transact.net.au (202.55.144.17)  28.049 ms  22.642 ms  23.717 ms
 7  502.ATM2-0-0.GW2.CBR2.ALTER.NET (210.80.144.249)  52.009 ms  222.711 ms  23.048 ms
 8  422.AT-6-0-0.XR1.CBR2.ALTER.NET (210.80.32.185)  26.384 ms  23.376 ms  29.823 ms
 9  0.so-4-1-0.XR1.SYD2.Alter.Net (210.80.38.205)  42.155 ms  25.751 ms  27.900 ms
10  11.so-6-0-0.BR2.SYD2.ALTER.NET (210.80.33.218)  19.914 ms  25.309 ms  25.813 ms
11  POS2-0-0.un1.optus.net.au (202.139.138.189)  22.010 ms  47.804 ms  25.804 ms
12  61.88.181.138 (61.88.181.138)  22.021 ms  21.934 ms  28.279 ms
13  AARnet.52gdc76f02.optus.net.au (61.88.128.90)  28.274 ms  45.260 ms  48.429 ms
14  gigether0-2-5.bb1.b.syd.aarnet.net.au (202.158.202.22)  55.728 ms  69.384 ms  73.946 ms
15  broker1.a.syd.aarnet.net.au (202.158.196.131)  25.881 ms  45.417 ms  26.216 ms

tbble@yurika:~$ traceroute 192.231.212.5
traceroute to 192.231.212.5 (192.231.212.5), 30 hops max, 38 byte packets
 1  203.221.207.65 (203.221.207.65)  1.116 ms  0.461 ms  0.476 ms
 2  fe2-0.wsr01-nort-cbr.comindico.com.au (203.220.47.65)  1.445 ms  0.824 ms  1.745 ms
 3  pos1-2.bdr03-kent-syd.comindico.com.au (203.194.28.233)  7.359 ms  14.496 ms  5.630 ms
 4  POS2-1-0.un1.optus.net.au (202.139.129.221)  6.296 ms  5.903 ms  6.769 ms
 5  61.88.181.142 (61.88.181.142)  8.053 ms  5.963 ms  5.517 ms
 6  AARnet.52gdc76f02.optus.net.au (61.88.128.90)  10.512 ms  7.460 ms  6.487 ms
 7  gigether0-2-5.bb1.b.syd.aarnet.net.au (202.158.202.22)  25.588 ms  20.274 ms  29.094 ms
 8  gigabitethernet3-0.bb3.a.syd.aarnet.net.au (202.158.194.114)  12.085 ms  10.459 ms  10.665 ms
 9  ipv6.broadway.aarnet.net.au (192.231.212.5)  8.039 ms  8.011 ms  9.326 ms

tbble@yurika:~$ traceroute broker.aarnet.net.au
traceroute to broker1.a.syd.aarnet.net.au (202.158.196.131), 30 hops max, 38 byte packets
 1  203.221.207.65 (203.221.207.65)  0.742 ms  0.845 ms  0.833 ms
 2  fe2-0.wsr01-nort-cbr.comindico.com.au (203.220.47.65)  1.867 ms  1.530 ms  2.141 ms
 3  pos1-2.bdr03-kent-syd.comindico.com.au (203.194.28.233)  6.429 ms  4.782 ms  4.834 ms
 4  POS2-1-0.un1.optus.net.au (202.139.129.221)  6.074 ms  9.116 ms  6.988 ms
 5  61.88.181.138 (61.88.181.138)  6.559 ms  11.372 ms  7.856 ms
 6  AARnet.52gdc76f02.optus.net.au (61.88.128.90)  11.383 ms  13.770 ms  11.306 ms
 7  gigether0-2-5.bb1.a.syd.aarnet.net.au (202.158.202.17)  29.667 ms  26.963 ms  27.406 ms
 8  broker1.a.syd.aarnet.net.au (202.158.196.131)  7.624 ms  10.412 ms  11.583 ms


-- 
-----------------------------------------------------------
Paul "TBBle" Hampson, MCSE
8th year CompSci/Asian Studies student, ANU
The Boss, Bubblesworth Pty Ltd (ABN: 51 095 284 361)
Paul.Hampson@Anu.edu.au

"No survivors? Then where do the stories come from I wonder?"
-- Capt. Jack Sparrow, "Pirates of the Caribbean"

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