Traceroute to ubuntuforums never finishes
Mark Haney
mhaney at ercbroadband.org
Thu Aug 28 11:37:59 UTC 2008
gasell wrote:
> Hello,
>
> I'm having trouble logging in to ubuntuforums. Even though my password/username combination is correct and I get the redirection page thanking me for logging in, I'm not really logged in.
>
> For some reason traceroute to forums does't get further from gw0-0-gr.canonical.com <http://gw0-0-gr.canonical.com/> (91.189.88.10 <http://91.189.88.10/> ). It just continues with *** forever (till 255). Asked a friend for the same traceroute and there gw0-0-gr.canonical.com <http://gw0-0-gr.canonical.com/> (91.189.88.10 <http://91.189.88.10/> ) is output twice and then feijoa.canonical.com <http://feijoa.canonical.com/> [91.189.94.12 <http://91.189.94.12/> ] is reached successfully.
>
> Is this a problem with the hop itself or should I bother my ISP?
>
>
To me this looks like a routing problem from your ISP. Based on what
you are telling us, traceroutes die at one point. That sounds like from
that point, the next hop has a different route BACK to you than the rest
of the /good/ hops. In other words at the point that 91.189.94.12 gets
your packet it is finding a /better route/ to you than the original path
it took to get there. Unfortunately, it looks like that route doesn't
make it back to you. This is either a misconfig with your ISP, or
possibly with canonical's routers.
It's also possible that your friends next hop isn't the same as yours.
Although not likely.
Of course this is all a guess, I've not looked at it.
--
Libenter homines id quod volunt credunt -- Caius Julius Caesar
Mark Haney
Sr. Systems Administrator
ERC Broadband
(828) 350-2415
Call (866) ERC-7110 for after hours support
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