floating IPs are sometimes missing in the neutron model, causing missing rules table=26

In this example, 192.168.56.9 is a floating IP which doesn't have a translation rule in table 26:

cookie=0x8000003, duration=892.776s, table=21, n_packets=0, n_bytes=0, priority=42,ip,metadata=0x222e0/0xfffffffe,nw_dst=192.168.56.9 actions=goto_table:44
cookie=0x8000003, duration=889.970s, table=21, n_packets=57, n_bytes=7348, priority=42,ip,metadata=0x222e2/0xfffffffe,nw_dst=10.100.5.2 actions=write_actions(group:150000)
cookie=0x8000003, duration=801.936s, table=21, n_packets=86, n_bytes=11131, priority=42,ip,metadata=0x222e2/0xfffffffe,nw_dst=10.100.5.3 actions=write_actions(group:150001)
cookie=0x8000004, duration=892.888s, table=21, n_packets=25, n_bytes=2772, priority=10,ip,metadata=0x222e2/0xfffffffe actions=goto_table:26
cookie=0x8000003, duration=1302.820s, table=21, n_packets=221, n_bytes=22184, priority=0 actions=goto_table:80
cookie=0x8000004, duration=1302.735s, table=22, n_packets=0, n_bytes=0, priority=0 actions=CONTROLLER:65535
cookie=0x8000006, duration=892.776s, table=26, n_packets=25, n_bytes=2772, priority=5,ip,metadata=0x222e2/0xfffffffe actions=goto_table:46