Syntax
eth3 {
default-gateway <ip-address>;
ip-address <ip-address>;
mtu <value>;
netmask <ip-netmask>;
speed-duplex {100Mbps-full-duplex | 100Mbps-half-duplex | 10Mbps-full-duplex | 10Mbps-half-duplex | 1Gbps-full-duplex | 1Gbps-half-duplex | auto-negotiate};
permitted-ip <ip-address/netmask>;
service disable-icmp {no | yes};
}