OK, did some more research on this MTU value, it turns out the 82577LM controller is limited to 4k Jumbo frames. Tried it again in the current stable release kernel and I can set the MTU to 4078 using the normal kernel as well.
Not a bug, a hardware limitation. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/715331 Title: e1000e / Intel 82577LM Gbit NIC Jumbo Frames not working. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
