SixXS::Sunset 2017-06-06

Ticket ID: SIXXS #610144
Ticket Status: Resolved

PoP: gblon02 - Goscomb Technologies (London)

/64 isn't...?
[au] Shadow Hawkins on Tuesday, 20 November 2007 04:26:27
I have read and followed the "Reporting Problems" section on the Contact page and am providing the following details for this report based on the list of items stated there: Hi. NIC handle MNC2-SIXXS Running a static 6to4 tunnel from My understanding was that the v6 address that'd be allocated to the tunnel would be a /64. I have 2a01:348:6:4e::2 at my end, so that'd mean I'd be able to set up my tunnel end point as a router with reachability to anything that started with 2a01:348:6:4e::/64. However -- from 2001:44b8:f020::1, a traceroute yields the following: bdr1.sjc2>traceroute 2a01:348:6:4e::3 Type escape sequence to abort. Tracing the route to 2A01:348:6:4E::3 1 (2001:418:0:5000::8D) 140 msec 104 msec 4 msec 2 (2001:418:0:2000::12D) 0 msec 0 msec 0 msec 3 (2001:418:0:2000::1BA) 56 msec 56 msec 60 msec 4 (2001:418:0:2000::35) 56 msec 60 msec 56 msec 5 (2001:418:0:2000::BE) 84 msec 84 msec 164 msec 6 (2001:418:0:2000::10E) 164 msec 164 msec 164 msec 7 (2001:728:0:2000::11A) 164 msec 164 msec 164 msec 8 (2001:728:1C00:5000::26) 172 msec 176 msec 168 msec 9 (2A01:348:0:4:0:3:1:1) !U !U !U (of course, tracerouting to :1 and :2 works) Is my understanding incorrect? Is the tunnel actually carrying a /126 instead of a /64 ? Thanks, - mark
/64 isn't...?
[ch] Jeroen Massar SixXS Staff on Tuesday, 20 November 2007 10:38:35
Running a static 6to4 tunnel from
Just to clarify, you most very likely mean 6in4 or proto-41 and not 6to4, which is proto-41 with 2002::/16 addresses. Only ::1 (PoP), and ::2 (Your end of the tunnel) are in use in that /64. If you want to have a subnet (a /48), then request a subnet. From the FAQ: "Note well that in tunnels from the /64 only ::1 (the PoP) and ::2 (your endpoint) can be used as the rest is not routed. Thus if you need to connect other hosts do it correctly and request a subnet."
State change: resolved Locked
[ch] Jeroen Massar SixXS Staff on Tuesday, 20 November 2007 10:38:39
Message is Locked
The state of this ticket has been changed to resolved

Please note Posting is only allowed when you are logged in.

Static Sunset Edition of SixXS
©2001-2017 SixXS - IPv6 Deployment & Tunnel Broker