Wednesday, August 25, 2010

Update on the SYN-less ACK problem

So, a while back, I mentioned a weird one I'd been seeing -- SYNless ACKing.

Here's what we knew:
It only happened on the first connection.
And it only happened after the machine has been idle for long periods of time for a given host.

It turns out that it's a known issue. According to Sun Oracle, it's part of CR 6942436.

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Regis has worked as a network engineer since 1994 for small companies and for large companies.