met some problem when kgdb start up , the reference is following:

kgdboe: local port 6443
kgdboe: local IP
kgdboe: interface eth0
kgdboe: remote port 6442
kgdboe: remote IP
kgdboe: remote ethernet address ff:ff:ff:ff:ff:ff
kgdboe: eth0 doesn't exist, aborting.
kgdboe: netpoll_setup failed kgdboe failed
kgdb: Waiting for connection from remote gdb...
did anyone met the problem before? and what about netpoll?