Wireless TCP aborts
Pyun YongHyeon
pyunyh at gmail.com
Sun Mar 7 22:57:22 UTC 2010
On Sun, Mar 07, 2010 at 02:16:36PM -0800, Tim Kientzle wrote:
> Using ssh and rsync to copy a lot of stuff from my
> old desktop to my new laptop. The old desktop is using
> a wired connection to an (admittedly crappy) D-Link router,
> the new one is using an Atheros wireless connection to the
> same router. I periodically see the transfer fail with
> the following messages on the wireless side:
>
> Corrupted MAC on input.
> Disconnecting: Packet corrupt
I guess this message came from ssh.
> rsync: connection unexpectedly closed ... [receiver]
>
> and then the rsync session is dead.
>
> It seems odd that a single corrupt packet would terminate
> the TCP connection.
>
I think it's default behavior of ssh if it detect malformed packet.
I used to see this forced disconnection of ssh when driver
incorrectly set RX checksum flag OK for corrupted packets which
were caused by hardware bug.
> uname: FreeBSD 9.0-CURRENT r201154M: Tue Dec 29 09:27:29 PST 2009
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