Im pxebooting target machine with vmlinuz & initrd.
Once vmlinuz loads initrd, Im calling "/bin/sh" from linuxrc script so that I get command prompt.
But my machine is not connected to network.
# ping
connect: network is unreachable
#ifconfig -a
can not open /proc/net/dev : No such file or directory

my /proc is empty.

Please advice how to customize initrd image to support networking