I have some networking questions directly below is a bit of a network diagram 
not sure if it is completely accurate or even correct other infos follow. 

INET >>>> ibg0 >> GZ >> admin_nic >> IPF/NAT >> gw0 >> switch0 >> GZ >>>> zones 
and KVMs 

Anyways i would like to add an Internal nic or vnic to the GZ with IP address 
172.16.0.200 so that i can setup NFS, FIFO, etc using an internal ip instead of 
the external one, is the internal NIC TAG listed below from my /usbkey/config 
file going to work for me or is there a better more correct way. Also can i use 
a virtual MAC address, or a real MAC address from one of my unplugged NICS? or 
can i just ommit to MAC and let SmartOS do some magic and create or not need 
one? 

Here is part of my /usbkey/config please see the internal_nic section 

admin_nic=0:25:90:e9:c:4 
admin_ip=204.244.122.132 
admin_netmask=255.255.255.224 
admin_network=... 
admin_gateway=204.244.122.129 

etherstub="switch0" 

#Internal nic connects GZ to internal network? 
internal_nic= ???????????? use real mac of one of my unplugged NICs or use 
virtual MAC or can i skip MAC all together ????????? 
internal0_ip=172.16.0.200 
internal0_netmask=255.255.255.0 
internal0_gateway=172.16.0.1 

Here is a bit more about the network, and i have to say thanks to lots of folks 
on the IRC that have helped me get this far 

I have this in /opt/custom/bin/net-setup 
## setup gw0 
4 if [ `dladm show-vnic | grep gw0 | wc -l` -ne 1 ]; then 
5 /usr/sbin/dladm create-vnic -m 2:8:20:bc:d5:5f -l switch0 gw0 
6 /usr/sbin/ipadm create-addr -T static -a 172.16.0.1/24 gw0/v4 
7 fi 
8 
9 ## setup ip forwarding 
10 /usr/sbin/routeadm -u -e ipv4-forwarding 
11 /usr/sbin/routeadm -u -e ipv6-forwarding 
12 A bunch of IPF/NAT rules to make things happen 

Some more hopefully helpful infos 

dladm show-phys 
LINK MEDIA STATE SPEED DUPLEX DEVICE 
igb0 Ethernet up 1000 full igb0 
igb1 Ethernet up 1000 full igb1 
igb2 Ethernet down 0 half igb2 
igb3 Ethernet down 0 half igb3 


ifconfig -a 
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 
index 1 
inet 127.0.0.1 netmask ff000000 
igb0: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu 1500 index 
2 
inet 204.244.122.132 netmask ffffffe0 broadcast 204.244.122.159 
ether 0:25:90:e9:c:4 
dell0: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu 1500 index 
3 
inet 192.168.1.10 netmask ffffff00 broadcast 192.168.1.255 
ether 2:8:20:d9:4e:6a 
gw0: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu 9000 index 4 
inet 172.16.0.1 netmask ffffff00 broadcast 172.16.0.255 
ether 2:8:20:bc:d5:5f 
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 
index 1 
inet6 ::1/128 
gw0: flags=20002100840<RUNNING,MULTICAST,ROUTER,IPv6> mtu 9000 index 4 
inet6 ::/0 
ether 2:8:20:bc:d5:5f 

netstat -rn -f inet 

Routing Table: IPv4 
Destination Gateway Flags Ref Use Interface 
-------------------- -------------------- ----- ----- ---------- --------- 
default 204.244.122.129 UG 7 10846355 igb0 
127.0.0.1 127.0.0.1 UH 4 696826 lo0 
172.16.0.0 172.16.0.1 U 10 11739732 gw0 
192.168.1.0 192.168.1.10 U 2 0 dell0 
204.244.122.128 204.244.122.132 U 7 442026 igb0 


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