How is routing learned or propagated for IP subnets or addresses that are used by NAT?

Routing for IP addresses created by NAT is learned if:

• The inside global address pool is derived from the subnet of a next-hop router.
• Static route entry is configured in the next-hop router and redistributed within the routing network.

When the inside global address is matched with the local interface, NAT installs an IP alias and an ARP entry, in which case the router will proxy-arpfor these addresses. If this behavior is not wanted, use the no-aliaskeyword.

When a NAT pool is configured, the add-routeoption can be used for automatic route injection.