Re: TCP resets connection after 3rd ACK with win=0

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Gergely Magyarosi wrote:
>
> I have noticed a strange behavior with heavy traffic.
> Linux TCP stack resets connection, after exchanging 3 ACKs with zero
> advertised window size.
> That is:
>
> 1.  ACK, win=0,len=0 received from peer
>    ACK, win=0, len=0 sent to peer
>
> 2. same as 1.
>
> 3. ACK, win=0,len=0 received from peer
>    RST, ACK, win >0, len=0 sent to peer
>
> The sequence numbers remain the same, because neither side can send.
> 3rd ACK received frequently triggers a RST. (It shouldn't IMHO,
> according to RFC.)
>
> Is this a feature for conserving resources, or a bug?
>
> the kernel version: 2.6.5
>
Does the same happen with newer kernels? 2.6.24?

Regards,
Varun
> Thanks.
> Best Regards, Gergely Magyarosi.
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