On Thu, 2005-10-13 at 14:42 -0400, Valdis.Kletnieks@vt.edu wrote:
On Thu, 13 Oct 2005 11:05:58 PDT, Peter Lothberg said:
Is there anyone who can talk to it using IPv6 on the Nanog list?
(Time20.Stupi.SE, 2001:0440:1880:1000::0020)
% ntpdate -q 2001:0440:1880:1000::0020 server 2001:440:1880:1000::20, stratum 1, offset 0.012038, delay 0.45547 13 Oct 14:37:22 ntpdate[30374]: adjust time server 2001:440:1880:1000::20 offset 0.012038 sec
% traceroute6 2001:0440:1880:1000::0020 traceroute to 2001:0440:1880:1000::0020 (2001:440:1880:1000::20) from 2001:468:c80:2103:206:5bff:feea:8e4e, 30 hops max, 16 byte packets
Well Valdis, that bad route also has to do with your side of the equation, you might want to check who you are actually using as transits and if the routes they are providing to you are sane enough. Text version: 2001:468::/32 is in the routing table, getting accepted by most ISP's. This one has a reasonable route, going over GBLX (3549) in most places. Though some get this over BT (1752), who have 'nice' (ahem) tunneled connectivity and transit with everybody on the planet. ESNET (293) seem to be the third 'transit', with OpenTransit (5011) being the fourth one and ISC being the fifth. Many routes seem to go over VIAGENIE (10566) who seem to have some connectivity problems too most of the time. Path wise most of it looks pretty sane. Then there is a chunk of /40's, which are visible inside Abilene, GRH does see them, but other ISP's don't. Most people will thus take the /32 towards your IP, which might go over some laggy tunneled networks. Fortunately not criss cross world yet, but... then the fun part: 2001:468:e00::/40 though seem to be visible globally, getting announced by University of California, directly going to: Korea! :) And then coming back to the rest of the world over Viagenie (10566) One of those nice paths: 2001:468:e00::/40 16150 (SE) 6667 (FI) 3549 (US) 6939 (US) 6939 (US) 10566 (CA) 3786 (KR) 17832 (KR) 1237 (KR) 17579 (KR) 2153 (US) Neatly around the world, you might want to hint this University to not do 'transit' uplinks themselves with Korean networks :) Then there is also a 2001:468:e9c::/48 which also goes over Korea. The colored version: http://www.sixxs.net/tools/grh/lg/?find=2001:468::/32 The above simply happens because most ISP's sanely filter on /32 boundaries, as per: http://www.space.net/~gert/RIPE/ipv6-filters.html For further reading see Gert Doering's excellent presentations at: http://www.space.net/~gert/RIPE/ Greets, Jeroen