1. use vserver with virtual ip address 0.0.0.0:0 listening only on server's vlan (server subnet 172.23.161.x).
2. configure serverfarm with 'nat client' and predictor forward
3. all connections from server side will be natted. do you need this?
example:
natpool VIP-NAT-POOL-TEST ip_pool_start end
!start and end can be the same ip address
!and can be the virtual
serverfarm ROUTE-NAT
no nat server
nat client NAT-POOL-TEST
predictor forward
vserver FWD-NAT
virtual 0.0.0.0 0.0.0.0 any
vlan VLANX
serverfarm ROUTE-NAT
persistent rebalance
inservice