This might not be the right place to ask this question. If someone could point me to a better place, that would be greatly appreciated. My question is this, what is this rx_csum_offload_errors and what causes them. I see them on a few machines that are on my network. I only get maybe 10 or so a day on a couple of my machines. The thing is, it's not always the same machines that get them every day. It can vary. Could this be a sender that is configured to use TSO while no one else is? Is there an easy way for me to setup a rule to capture these packets and find out what the IP address of the sender is? Thanks in advance. --- Will Y. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.