On Mon, 24 Feb 2003, Jonathan Lemon wrote:

> In LAST_ACK state, the machine should keep retransmitting the FIN
> until it gets an ACK from the peer, or the connection times out,
> which should take roughly 8 minutes.  If the connections stay around
> forever, then something is broken.

The one thing all connections had in common was that they were outbound to
MSN.com.  I believe that to scale their junk software up, everything is
behind load-balancers, which can make things interesting if the LB doesn't
do things "correctly".

> ISTR someone mentioning that things were working as expected in the
> latest -stable, which version are you using?

This particular box is 4.6.2-p2.  Since rebooting with IPFilter in place,
I'm not seeing it anymore.  So either MSN fixed something or IPFilter is
masking the problem (or both).  Somewhere in my Google-ing, I found people
claiming that LAST_ACK can sit around for days if the other end doesn't
respond.  If this were less of a harried situation, I would have tcpdumped
some traffic to see if we were actually retransmitting the FIN.

Got a PR or anything referencing the possible problem?

Thanks,

Charles

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> Jonathan
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