I think there are 2 problems cause connectivity broken in the live-migration
1. When the VM is migrated to the destination, and the VM send the rarp packets, but because it's too fast, the openflow and tag haven't been configed in br-int, then the rarp packets will be drop.

2. When the VM is migrated to the destination, the openflow and tag have been configed, then VM send rarp packet, but table 71 flow will drop these packets, because high priority flow(65 70 80 95) doesn't match the rarp packets, only low priority flow(10) will match, but its action is drop, so the packets still cannot been sent out. The table 71 flows:
 cookie=0x6c5958fed07888a7, duration=428986.816s, table=71, n_packets=0, n_bytes=0, idle_age=65534, hard_age=65534, priority=110,ct_state=+trk actions=ct_clear,resubmit(,71)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=95,icmp6,reg5=0x2d,in_port=45,icmp_type=130 actions=resubmit(,94)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=3, n_bytes=210, idle_age=24441, priority=95,icmp6,reg5=0x2d,in_port=45,icmp_type=133 actions=resubmit(,94)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=1, n_bytes=78, idle_age=24450, priority=95,icmp6,reg5=0x2d,in_port=45,icmp_type=135 actions=resubmit(,94)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=95,icmp6,reg5=0x2d,in_port=45,icmp_type=136 actions=resubmit(,94)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=70,icmp6,reg5=0x2d,in_port=45,icmp_type=134 actions=resubmit(,93)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=1, n_bytes=42, idle_age=24450, priority=95,arp,reg5=0x2d,in_port=45,dl_src=fa:16:3e:b4:db:09,arp_spa=192.168.100.141 actions=resubmit(,94)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=91, n_bytes=8818, idle_age=24446, priority=65,ip,reg5=0x2d,in_port=45,dl_src=fa:16:3e:b4:db:09,nw_src=192.168.100.141 actions=ct(table=72,zone=NXM_NX_REG6[0..15])
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=2, n_bytes=678, idle_age=24450, priority=80,udp,reg5=0x2d,in_port=45,tp_src=68,tp_dst=67 actions=resubmit(,73)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=80,udp6,reg5=0x2d,in_port=45,tp_src=546,tp_dst=547 actions=resubmit(,73)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=70,udp,reg5=0x2d,in_port=45,tp_src=67,tp_dst=68 actions=resubmit(,93)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=0, n_bytes=0, idle_age=24454, priority=70,udp6,reg5=0x2d,in_port=45,tp_src=547,tp_dst=546 actions=resubmit(,93)
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=1, n_bytes=90, idle_age=24441, priority=65,ipv6,reg5=0x2d,in_port=45,dl_src=fa:16:3e:b4:db:09,ipv6_src=fe80::f816:3eff:feb4:db09 actions=ct(table=72,zone=NXM_NX_REG6[0..15])
 cookie=0x6c5958fed07888a7, duration=24454.927s, table=71, n_packets=1, n_bytes=90, idle_age=24450, priority=10,reg5=0x2d,in_port=45 actions=ct_clear,resubmit(,93)
 cookie=0x6c5958fed07888a7, duration=428986.851s, table=71, n_packets=0, n_bytes=0, idle_age=65534, hard_age=65534, priority=0 actions=drop