arp 192.168.1.100 aabb.ccdd.eeff ARPA Or DHCP static binding:
iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -j SNAT --to-source 203.0.113.10
iptables -t nat -L -n -v Extract IPs from a list: map ip
ip dhcp pool MAP-EXAMPLE host 192.168.1.100 255.255.255.0 hardware-address aabb.ccdd.eeff DNAT (map external IP to internal):
iptables -t nat -A PREROUTING -d 203.0.113.10 -j DNAT --to-destination 192.168.1.50 arp 192
- name: Show IP mappings hosts: localhost vars: interfaces: - name: eth0 ips: ['192.168.1.10/24', '10.0.0.5/8'] - name: eth1 ips: ['172.16.1.1/24'] tasks: - debug: msg: " flatten " ["192.168.1.10", "10.0.0.5", "172.16.1.1"] 5. Scenario D: SDN / OpenFlow IP Mapping (e.g., Open vSwitch) Match IP and rewrite destination:
ip neigh show
sudo ip neigh add 192.168.1.100 lladdr aa:bb:cc:dd:ee:ff dev eth0 nud permanent Check mapping: