Hello! > Oct 2 13:09:53 castle kernel: TCP: peer shrinks window. Bad, what else can I > say? Please, try to catch this with tcpdump. > 1. What could cause such messages; Window scaling is the only known reason. > 2. How to fix that. If it is due to window scaling, it is harmless. > 3. Could it be somehow related to iptables packet filtering rules Unlikely. > 4. Now I have approx. 5% packet coalisions on eth0 interface, but I haven't > any when eth0 wasn't aliased. What could it be wrong there? Nothing. The connection is absent, it is wrong impression, I think. Alexey - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org