Hello, Kernel 3.15 introduced a change in the MTU calculation logic.
If a MTU of 1500 is passed to an adapter nothing has changed. Network devices (adapters, switches, routers, but with no VLANs) operate normally within the full 1518 byte frame. If an MTU > 1500 is passed the VLAN header is added to the calculation and so old cases of passing 9000 to an adapter no longer work unless you account for the VLAN header and pass 8996. [1] Why? I have no VLAN 802.1Q tagging occurring on my network and no VLAN settings configured on my adapters. Thanks, Michael [1] http://sourceforge.net/p/e1000/mailman/message/32636360/ ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
