iptables --flush
nic #
 iptables --table nat --flush
nic #
 iptables --delete-chain
nic #
 iptables --table nat --delete-chain
nic #
 # NAT to NIC's address
nic #
 iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -p udp --sport 4500  -j SNAT --to-source 192.1.2.254:EPHEM
nic #
 iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -j SNAT --to-source 192.1.2.254
nic #
 iptables --table nat --flush
nic #
 iptables --table nat --delete-chain
nic #
 conntrack --flush
conntrack vA.B.C (conntrack-tools): connection tracking table has been emptied.
nic #
 # NAT to NIC's address
nic #
 iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -p udp --sport 4500  -j SNAT --to-source 192.1.2.254:EPHEM
nic #
 iptables -t nat -A POSTROUTING -s 192.1.3.0/24 -j SNAT --to-source 192.1.2.254
nic #
 
