i try set MTU to 1492, but still not working.
"uname -r"
3.2.0-34-generic-pae
but i find problem on autonegotiation - off
install ethtool
"sudo apt-get install ethtool"
information
"sudo ethtool eth0"
change autonegotiation to on
"sudo ethtool -s eth0 autoneg on"
now eth0 working fine.
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