I am trying to set the MTU for Jumbo packets on Cent OS 6. When ever I set it about 1500 I get "SIOCSIFMTU: Invalid argument" and "WARNING: NC375T supports only the default MTU of 1500 bytes" shows up in the messages log. I updated the driver and firmware to the lastest and still get the messages. Here is some ethtool output:
# ethtool -i eth0
I am getting ready to install Windows on it just to see if I can pass a jumbo packet with the card at all. The docs say"
Range : 0-8000
See the Examples section below on how to set the MTU
Any Ideas? Thanks