Very sporadically, possibly a month between instances, the built in dual port ixgbe on a supermicro board stops allowing connectivity and just logs a spoofed packet message to /var/log/messages such as
this repeats every 2 seconds while the interface is down. All we can do is reboot the server and all is well until this happens again. No known relation to traffic levels. I also don't understand how a count of packets can be negative.