Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 neutron-openvswi-PREROUTING  all  --  *      *       0.0.0.0/0            0.0.0.0/0           

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain POSTROUTING (policy ACCEPT 113 packets, 6795 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 MASQUERADE  all  --  *      eth0    172.24.4.0/24        0.0.0.0/0            /* 000 nat */

Chain neutron-openvswi-PREROUTING (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            PHYSDEV match --physdev-out tap73701aaa-7c /* Accept all packets when port is trusted. */
    0     0 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            PHYSDEV match --physdev-in tap73701aaa-7c /* Accept all packets when port is trusted. */
    0     0 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            PHYSDEV match --physdev-out tapc545a14e-1a /* Accept all packets when port is trusted. */
    0     0 ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            PHYSDEV match --physdev-in tapc545a14e-1a /* Accept all packets when port is trusted. */