passive nic config in redhat

[root@localhost testtcpreply]# vim /etc/sysconfig/network-scripts/ifcfg-eth1

# Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express
DEVICE=eth1
BOOTPROTO=none
HWADDR=00:22:19:D5:28:B4
ONBOOT=yes
#NETMASK=255.255.255.0
#IPADDR=192.168.0.102
#GATEWAY=192.168.0.1
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes