Curious iptables log messages

[Kenneth]

> Sep 25 18:46:55 helen kernel: IN=eth0 OUT= 
> MAC=00:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:00 SRC=192.168.21.11 
> DST=192.168.20.31 LEN=308 TOS=0x10 PREC=0x00 TTL=63 ID=40237 DF PROTO=TCP 
> SPT=22 DPT=57702 WINDOW=2160 RES=0x00 ACK PSH URGP=0

I see occasional messages like these. I always assumed it was from old
connections, so the connection tracking had forgotten them.  I never tried to
track them down further.


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