# ifup eth3
I received the error
"device eth3 does not seem to be present, delaying initialization"
First thing first, Do check whether the network card is there, do use the command
# lspci |grep Mellanox
If the card is detected, do use this command to show the link. This will give you the clues on
# ip -o link
..... ..... 2: eth3:
mtu 1500 qdisc pfifo_fast qlen 1000\ link/ether 00:00:00:00:00:01 brd ff:ff:ff:ff:ff:ff 3: eth4:..... mtu 1500 qdisc pfifo_fast qlen 1000\ link/ether 00:00:00:00:00:02 brd ff:ff:ff:ff:ff:ff .....