Comcast problems?

Ted Fischer ted at
Sat Apr 5 19:03:35 UTC 2008

I didn't save any of my Wireshark traces, but this is what I observed 
(I'm behind Charter at home but visiting my brother in NJ - Comcast territory).

All attempts to check my e-mail (neither Charter nor Comcast) showed 
the syns going out but no syn acks coming back.  Then, after a few 
minutes (pop server time outs I guess) I started seeing fins coming 
back from the pop server that matched my connection requests.  Saw 
that occur with various http connection attempts as well.

Of course, the only reason I can send this reply out is that they 
appear to be back up.  Any chance of getting a non-nonsensical RFO 
from someone?


At 02:16 PM 4/5/2008, you wrote:

>On Sat, Apr 5, 2008 at 1:44 PM, Steven M. Bellovin 
><smb at> wrote:
> >  The fact that I get different behavior for different protocols makes me
> >  suspect they're having trouble with equipment designed to control p2p
> >  traffic.  Their help phone line simply speaks of an outage.  Service
> >  has come back occasionally, but not for long.  The problem has been
> >  going on since about 6am.
> >
> >  Does anyone have any data?
>wasn't it sandvine last time? did you try calling them as well? All
>joking aside, one hopes that these sorts of things show that the 'p2p
>control' soutions are far from perfect and far from 'well baked' and
>likely still very ill-advised.

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