[ILUG] Eircon DSL - A word to the wise

[Cathal Garvey]

Timothy Murphy wrote:

 > Talking of Eircom ADSL,
 > did anyone notice a problem late last night?

Nope. I'm on 2Mb, Terenure.

 > Something with DNS, I think -
 > I couldn't get past eircom.net .

As in a traceroute wouldn't leave eircom.net network, or any site other 
than eircom.net wouldn't resolve? I had neither problem last night anyway.

 > Incidentally, when I tried traceroute anywhere
 > I got the first 2 sites at once,
 > then there was a wait of about 10 seconds before the 3rd and 4th came on,
 > and nothing after that.
 > But what puzzled me was that the times in the 3rd and 4th sites
 > were reasonable - 50ms or so.


 > Why weren't they much longer, since there was a 10s delay?

If it was DNS related, it was probably because it was doing a reverse 
lookup on (and borking) on the IP. So the traceroute would still get a 
normal reply, just when it comes to display the reply it gets the 
reverse domain name for the IP, and it was probably that that took the 10s).

.cg

(god damn reply/reply-to-all)