we are experiencing problem with systems using intel nics causing multicast storms and impacting other systems on the network. It appears to drivers or features on the nic that are enabled -
here is more detail on the issues Destination Address 01-80-c2-00-00-01 Source Address (address of the NIC Ethertype 8088 Frequency 0.84seconds Hex Dump of the mulitcast packets 01 80 C2 00 00 01 00 A4 00 80 D2 9C 88 08 01 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 This is a problem with the Intel "eepro100" driver. The problem appears to occur when the system is halted but not turned off.
assigned to kernel
*** Bug 7731 has been marked as a duplicate of this bug. ***
The frame in question is a flow control frame and is never generated by a linux kernel. Due to lack of documentation from intel on eepro100 configuration/setup its not possible to guess what the post Linux shutdown/bios issue might be.