NAT44: prohibit multiple static mappings for a single local address
@@ -785,6 +785,17 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr,
vrf_id = sm->inside_vrf_id;
}
+ if (!out2in_only)
+ {
+ m_key.addr = l_addr;
+ m_key.port = addr_only ? 0 : l_port;
+ m_key.protocol = addr_only ? 0 : proto;
+ m_key.fib_index = fib_index;
+ kv.key = m_key.as_u64;
+ if (!clib_bihash_search_8_8 (&sm->static_mapping_by_local, &kv, &value))
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
/* Find external address in allocated addresses and reserve port for
address and port pair mapping when dynamic translations enabled */
if (!(addr_only || sm->static_mapping_only || out2in_only))
