Hi, <tl;dr> Commit 355fef6f2 seems to break connectivity in my setup</tl;dr>
I am working on an OpenStack deploy with ovs 2.16 and initially thought the issue was a neutron problem so have been logging bug information here: https://bugs.launchpad.net/openvswitch/+bug/1964117 It's a fairly standard OpenStack setup with two ovs bridges br-int and br-tun. Port security is enabled so there are additional openflows rules against br-int to enforce that. IPv6 is being used. With ovs 2.15 I can ping and connect to a remote server (using IPv6). After upgrading to 2.16 connectivity is lost. A git bisect led me to commit 355fef6f2 so I have created a deb for ovs 2.16 that includes a patch that backs this commit out and connectivity is restored. (The deb is in this ppa https://launchpad.net/~gnuoy/+archive/ubuntu/focal-xena/+packages ) With both 2.15 and 2.16 the flow tables seem to me to be the same (just changes of cookie value and minor reordering of rules with the same priority). Using ofproto/trace seems to show the packet should be permitted in both the working and broken setup. I am no ovs expert but I do notice that the flow rules for br-int include resubmits and clones which are mentioned in the commit message for 355fef6f2. These are the flows for both br-int and br-tun: $ sudo ovs-ofctl dump-flows br-int [47/90215] cookie=0xb10d352167cfbb61, duration=3203.525s, table=0, n_packets=0, n_bytes=0, priority=65535,vlan_tci=0x0fff/0x1fff actions=drop cookie=0xb10d352167cfbb61, duration=3203.014s, table=0, n_packets=0, n_bytes=0, priority=5,in_port="int-br-data",dl_dst=fa:16:3f:75:5a:42 actions=resubmit(,4) cookie=0xb10d352167cfbb61, duration=3203.013s, table=0, n_packets=0, n_bytes=0, priority=5,in_port="patch-tun",dl_dst=fa:16:3f:75:5a:42 actions=resubmit(,3) cookie=0xb10d352167cfbb61, duration=3203.024s, table=0, n_packets=0, n_bytes=0, priority=4,in_port="int-br-data",dl_src=fa:16:3f:0c:17:4e actions=resubmit(,2) cookie=0xb10d352167cfbb61, duration=3203.019s, table=0, n_packets=0, n_bytes=0, priority=2,in_port="patch-tun",dl_src=fa:16:3f:0c:17:4e actions=resubmit(,1) cookie=0xb10d352167cfbb61, duration=3203.010s, table=0, n_packets=0, n_bytes=0, priority=4,in_port="int-br-data",dl_src=fa:16:3f:92:0b:ef actions=resubmit(,2) cookie=0xb10d352167cfbb61, duration=3203.005s, table=0, n_packets=0, n_bytes=0, priority=2,in_port="patch-tun",dl_src=fa:16:3f:92:0b:ef actions=resubmit(,1) cookie=0xb10d352167cfbb61, duration=3203.001s, table=0, n_packets=0, n_bytes=0, priority=4,in_port="int-br-data",dl_src=fa:16:3f:c7:ed:cf actions=resubmit(,2) cookie=0xb10d352167cfbb61, duration=3202.996s, table=0, n_packets=0, n_bytes=0, priority=2,in_port="patch-tun",dl_src=fa:16:3f:c7:ed:cf actions=resubmit(,1) cookie=0xb10d352167cfbb61, duration=3202.991s, table=0, n_packets=0, n_bytes=0, priority=4,in_port="int-br-data",dl_src=fa:16:3f:e1:d0:19 actions=resubmit(,2) cookie=0xb10d352167cfbb61, duration=3202.986s, table=0, n_packets=0, n_bytes=0, priority=2,in_port="patch-tun",dl_src=fa:16:3f:e1:d0:19 actions=resubmit(,1) cookie=0xb10d352167cfbb61, duration=3203.065s, table=0, n_packets=0, n_bytes=0, priority=2,in_port="int-br-data" actions=drop cookie=0xb10d352167cfbb61, duration=3203.531s, table=0, n_packets=2198, n_bytes=319080, priority=0 actions=resubmit(,60) cookie=0xb10d352167cfbb61, duration=3203.068s, table=1, n_packets=0, n_bytes=0, priority=1 actions=drop cookie=0xb10d352167cfbb61, duration=3203.067s, table=2, n_packets=0, n_bytes=0, priority=1 actions=drop cookie=0xb10d352167cfbb61, duration=3203.070s, table=23, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3203.527s, table=24, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3197.873s, table=60, n_packets=990, n_bytes=110840, priority=100,in_port="o-hm0" actions=load:0x3->NXM_NX_REG5[],load:0x1->NXM_NX_REG6[],resubmit(,71) cookie=0xb10d352167cfbb61, duration=3197.873s, table=60, n_packets=1062, n_bytes=166220, priority=90,dl_vlan=1,dl_dst=fa:16:3e:76:b2:58 actions=load:0x3->NXM_NX_REG5[],load:0x1->NXM_NX_REG6[],strip_vlan,re submit(,81) cookie=0xb10d352167cfbb61, duration=3203.529s, table=60, n_packets=146, n_bytes=42020, priority=3 actions=NORMAL cookie=0xb10d352167cfbb61, duration=3203.523s, table=62, n_packets=0, n_bytes=0, priority=3 actions=NORMAL cookie=0xb10d352167cfbb61, duration=3201.302s, table=71, n_packets=444, n_bytes=52272, priority=110,ct_state=+trk actions=ct_clear,resubmit(,71) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,icmp_type =130 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,icmp_type =133 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,icmp_type =135 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fe80::f816:3eff:fe76:b258,icmp_type=130 actions =resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fe80::f816:3eff:fe76:b258,icmp_type=133 actions =resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=126, n_bytes=10836, priority=95,icmp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fe80::f816:3eff:fe76:b258,icmp_type=135 a ctions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=132, n_bytes=10312, priority=95,icmp6,reg5=0x3,in_port="o-hm0",icmp_type=136,nd_target=fc00:622:627d:e8c:f816:3eff:fe76:b258 actions=resub mit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=90, n_bytes=7020, priority=95,icmp6,reg5=0x3,in_port="o-hm0",icmp_type=136,nd_target=fe80::f816:3eff:fe76:b258 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=50, n_bytes=17800, priority=80,udp,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,nw_src=0.0.0.0,tp_src=68,tp_dst=67 actions=resubmit(, 73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=80,udp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,tp_src=546 ,tp_dst=547 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=80,udp6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fe80::f816:3eff:fe76:b258,tp_src=546,tp_dst=547 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=70,udp,reg5=0x3,in_port="o-hm0",tp_src=67,tp_dst=68 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=70,udp6,reg5=0x3,in_port="o-hm0",tp_src=547,tp_dst=546 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=70,icmp6,reg5=0x3,in_port="o-hm0",icmp_type=134 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=444, n_bytes=52272, priority=65,ipv6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258 acti ons=ct(table=72,zone=NXM_NX_REG6[0..15]) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=148, n_bytes=12600, priority=65,ipv6,reg5=0x3,in_port="o-hm0",dl_src=fa:16:3e:76:b2:58,ipv6_src=fe80::f816:3eff:fe76:b258 actions=ct(table =72,zone=NXM_NX_REG6[0..15]) cookie=0xb10d352167cfbb61, duration=3197.873s, table=71, n_packets=0, n_bytes=0, priority=10,reg5=0x3,in_port="o-hm0" actions=ct_clear,resubmit(,93) cookie=0xb10d352167cfbb61, duration=3202.667s, table=71, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=441, n_bytes=51942, priority=74,ct_state=+est-rel-rpl,ipv6,reg5=0x3 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=74,ct_state=+est-rel-rpl,ip,reg5=0x3 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=3, n_bytes=330, priority=74,ct_state=+new-est,ipv6,reg5=0x3 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=74,ct_state=+new-est,ip,reg5=0x3 actions=resubmit(,73) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=148, n_bytes=12600, priority=50,ct_state=+inv+trk actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=50,ct_mark=0x1,reg5=0x3 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=50,ct_state=+est-rel+rpl,ct_zone=1,ct_mark=0,reg5=0x3 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=50,ct_state=-new-est+rel-inv,ct_zone=1,ct_mark=0,reg5=0x3 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=40,ct_state=-est,reg5=0x3 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=40,ct_state=+est,ip,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15],exec(load:0x1->NXM_NX_CT_MARK[])) cookie=0xb10d352167cfbb61, duration=3197.873s, table=72, n_packets=0, n_bytes=0, priority=40,ct_state=+est,ipv6,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15],exec(load:0x1->NXM_NX_CT_MARK[])) cookie=0xb10d352167cfbb61, duration=3202.388s, table=72, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3197.873s, table=73, n_packets=0, n_bytes=0, priority=100,reg6=0x1,dl_dst=fa:16:3e:76:b2:58 actions=load:0x3->NXM_NX_REG5[],resubmit(,81) cookie=0xb10d352167cfbb61, duration=3197.873s, table=73, n_packets=0, n_bytes=0, priority=90,ct_state=+new-est,ip,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15]),resubmit(,91) cookie=0xb10d352167cfbb61, duration=3197.873s, table=73, n_packets=3, n_bytes=330, priority=90,ct_state=+new-est,ipv6,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15]),resubmit(,91) cookie=0xb10d352167cfbb61, duration=3197.873s, table=73, n_packets=491, n_bytes=69742, priority=80,reg5=0x3 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3202.112s, table=73, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=100,arp,reg5=0x3 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=100,icmp6,reg5=0x3,icmp_type=130 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=280, n_bytes=24080, priority=100,icmp6,reg5=0x3,icmp_type=135 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=126, n_bytes=9828, priority=100,icmp6,reg5=0x3,icmp_type=136 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=95,udp,reg5=0x3,tp_src=67,tp_dst=68 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=95,udp6,reg5=0x3,tp_src=547,tp_dst=546 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=90,ct_state=-trk,ip,reg5=0x3 actions=ct(table=82,zone=NXM_NX_REG6[0..15]) cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=656, n_bytes=132312, priority=90,ct_state=-trk,ipv6,reg5=0x3 actions=ct(table=82,zone=NXM_NX_REG6[0..15]) cookie=0xb10d352167cfbb61, duration=3197.873s, table=81, n_packets=0, n_bytes=0, priority=80,ct_state=+trk,reg5=0x3 actions=resubmit(,82) cookie=0xb10d352167cfbb61, duration=3201.842s, table=81, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=77,ct_state=+est-rel-rpl,udp6,reg5=0x3,tp_dst=5555 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=213, n_bytes=80126, priority=77,ct_state=+new-est,udp6,reg5=0x3,tp_dst=5555 actions=ct(commit,zone=NXM_NX_REG6[0..15]),output:"o-hm0",resu bmit(,92) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=75,ct_state=+est-rel-rpl,icmp6,reg5=0x3 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=75,ct_state=+new-est,icmp6,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15]),output:"o-hm0",resubmit(,92) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=50,ct_state=+inv+trk actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=50,ct_mark=0x1,reg5=0x3 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=443, n_bytes=52186, priority=50,ct_state=+est-rel+rpl,ct_zone=1,ct_mark=0,reg5=0x3 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=50,ct_state=-new-est+rel-inv,ct_zone=1,ct_mark=0,reg5=0x3 actions=output:"o-hm0" cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=40,ct_state=-est,reg5=0x3 actions=resubmit(,93) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=40,ct_state=+est,ip,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15],exec(load:0x1->NXM_NX_CT_MARK[])) cookie=0xb10d352167cfbb61, duration=3197.873s, table=82, n_packets=0, n_bytes=0, priority=40,ct_state=+est,ipv6,reg5=0x3 actions=ct(commit,zone=NXM_NX_REG6[0..15],exec(load:0x1->NXM_NX_CT_MARK[])) cookie=0xb10d352167cfbb61, duration=3201.581s, table=82, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3200.767s, table=91, n_packets=3, n_bytes=330, priority=1 actions=resubmit(,94) cookie=0xb10d352167cfbb61, duration=3200.486s, table=92, n_packets=213, n_bytes=80126, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3200.201s, table=93, n_packets=148, n_bytes=12600, priority=0 actions=drop cookie=0xb10d352167cfbb61, duration=3201.034s, table=94, n_packets=842, n_bytes=98240, priority=1 actions=NORMAL $ sudo ovs-ofctl dump-flows br-tun cookie=0xb9492681bd7477d2, duration=3284.564s, table=0, n_packets=934, n_bytes=108974, priority=1,in_port="patch-int" actions=resubmit(,1) cookie=0xb9492681bd7477d2, duration=3278.661s, table=0, n_packets=2520, n_bytes=240838, priority=1,in_port="gre-ac140036" actions=resubmit(,3) cookie=0xb9492681bd7477d2, duration=3278.632s, table=0, n_packets=51, n_bytes=18156, priority=1,in_port="gre-ac14009b" actions=resubmit(,3) cookie=0xb9492681bd7477d2, duration=3278.598s, table=0, n_packets=51, n_bytes=18156, priority=1,in_port="gre-ac140098" actions=resubmit(,3) cookie=0xb9492681bd7477d2, duration=3278.576s, table=0, n_packets=0, n_bytes=0, priority=1,in_port="gre-ac1400d5" actions=resubmit(,3) cookie=0xb9492681bd7477d2, duration=3284.943s, table=0, n_packets=8, n_bytes=782, priority=0 actions=drop cookie=0xb9492681bd7477d2, duration=3284.561s, table=1, n_packets=934, n_bytes=108974, priority=0 actions=resubmit(,2) cookie=0xb9492681bd7477d2, duration=3284.941s, table=2, n_packets=0, n_bytes=0, priority=1,arp,dl_dst=ff:ff:ff:ff:ff:ff actions=resubmit(,21) cookie=0xb9492681bd7477d2, duration=3284.939s, table=2, n_packets=883, n_bytes=90818, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,20) cookie=0xb9492681bd7477d2, duration=3284.937s, table=2, n_packets=51, n_bytes=18156, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,22) cookie=0xb9492681bd7477d2, duration=3279.730s, table=3, n_packets=1312, n_bytes=222130, priority=1,tun_id=0x2c1 actions=mod_vlan_vid:1,resubmit(,9) cookie=0xb9492681bd7477d2, duration=3284.936s, table=3, n_packets=1310, n_bytes=55020, priority=0 actions=drop cookie=0xb9492681bd7477d2, duration=3284.934s, table=4, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb9492681bd7477d2, duration=3284.933s, table=6, n_packets=0, n_bytes=0, priority=0 actions=drop cookie=0xb9492681bd7477d2, duration=3284.517s, table=9, n_packets=0, n_bytes=0, priority=1,dl_src=fa:16:3f:0c:17:4e actions=output:"patch-int" cookie=0xb9492681bd7477d2, duration=3284.504s, table=9, n_packets=0, n_bytes=0, priority=1,dl_src=fa:16:3f:92:0b:ef actions=output:"patch-int" cookie=0xb9492681bd7477d2, duration=3284.494s, table=9, n_packets=0, n_bytes=0, priority=1,dl_src=fa:16:3f:c7:ed:cf actions=output:"patch-int" cookie=0xb9492681bd7477d2, duration=3284.484s, table=9, n_packets=0, n_bytes=0, priority=1,dl_src=fa:16:3f:e1:d0:19 actions=output:"patch-int" cookie=0xb9492681bd7477d2, duration=3284.562s, table=9, n_packets=1312, n_bytes=222130, priority=0 actions=resubmit(,10) cookie=0xb9492681bd7477d2, duration=3284.931s, table=10, n_packets=1312, n_bytes=222130, priority=1 actions=learn(table=20,hard_timeout=300,priority=1,cookie=0xb9492681bd7477d2,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:OXM_OF_IN_PORT[]),output:"patch-int" cookie=0xb9492681bd7477d2, duration=3278.649s, table=20, n_packets=705, n_bytes=76454, priority=2,dl_vlan=1,dl_dst=fa:16:3e:0e:46:59 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3278.645s, table=20, n_packets=178, n_bytes=14364, priority=2,dl_vlan=1,dl_dst=fa:16:3e:94:66:0c actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3278.640s, table=20, n_packets=0, n_bytes=0, priority=2,dl_vlan=1,dl_dst=fa:16:3e:b5:c4:91 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3278.608s, table=20, n_packets=0, n_bytes=0, priority=2,dl_vlan=1,dl_dst=fa:16:3e:67:9f:39 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac14009b" cookie=0xb9492681bd7477d2, duration=3278.584s, table=20, n_packets=0, n_bytes=0, priority=2,dl_vlan=1,dl_dst=fa:16:3e:7b:cf:a8 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140098" cookie=0xb9492681bd7477d2, duration=3278.568s, table=20, n_packets=0, n_bytes=0, priority=2,dl_vlan=1,dl_dst=fa:16:3e:cb:fb:84 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac1400d5" cookie=0xb9492681bd7477d2, duration=3275.205s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:94:66:0c actions=load:0->NXM_OF_VLAN_TCI[],load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3258.380s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:7b:cf:a8 actions=load:0->NXM_OF_VLAN_TCI[],load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140098" cookie=0xb9492681bd7477d2, duration=3252.836s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:0e:46:59 actions=load:0->NXM_OF_VLAN_TCI[],load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3218.392s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:67:9f:39 actions=load:0->NXM_OF_VLAN_TCI[],load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac14009b" cookie=0xb9492681bd7477d2, duration=3193.485s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:b5:c4:91 actions=load:0->NXM_OF_VLAN_TCI[],load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140036" cookie=0xb9492681bd7477d2, duration=3284.928s, table=20, n_packets=0, n_bytes=0, priority=0 actions=resubmit(,22) cookie=0xb9492681bd7477d2, duration=3284.926s, table=21, n_packets=0, n_bytes=0, priority=0 actions=resubmit(,22) cookie=0xb9492681bd7477d2, duration=3278.572s, table=22, n_packets=51, n_bytes=18156, priority=1,dl_vlan=1 actions=strip_vlan,load:0x2c1->NXM_NX_TUN_ID[],output:"gre-ac140098",output:"gre-ac140036",output:"gre-ac1400d5",output:"gre-ac14009b" cookie=0xb9492681bd7477d2, duration=3284.924s, table=22, n_packets=0, n_bytes=0, priority=0 actions=drop This is a trace of a ping packet through the br-int flows: sudo ovs-appctl ofproto/trace br-int in_port="o-hm0" fa163e0e4659fa163e76b25886dd6005a07800403a40fc000622627d0e8cf8163efffe76b258fc000622627d0e8cf8163efffe0e465980 0011da0002002197442b6200000000a151010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637 Flow: icmp6,in_port=3,vlan_tci=0x0000,dl_src=fa:16:3e:76:b2:58,dl_dst=fa:16:3e:0e:46:59,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,ipv6_dst=fc00:622:627d:e8c:f816:3eff:fe0e:4659,ipv6_label=0x5a078,nw_to s=0,nw_ecn=0,nw_ttl=64,icmp_type=128,icmp_code=0 bridge("br-int") ---------------- 0. priority 0, cookie 0xb10d352167cfbb61 goto_table:60 60. in_port=3, priority 100, cookie 0xb10d352167cfbb61 set_field:0x3->reg5 set_field:0x1->reg6 resubmit(,71) 71. ipv6,reg5=0x3,in_port=3,dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258, priority 65, cookie 0xb10d352167cfbb61 ct(table=72,zone=NXM_NX_REG6[0..15]) drop -> A clone of the packet is forked to recirculate. The forked pipeline will be resumed at table 72. -> Sets the packet to an untracked state, and clears all the conntrack fields. Final flow: icmp6,reg5=0x3,reg6=0x1,in_port=3,vlan_tci=0x0000,dl_src=fa:16:3e:76:b2:58,dl_dst=fa:16:3e:0e:46:59,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,ipv6_dst=fc00:622:627d:e8c:f816:3eff:fe0e:4659, ipv6_label=0x5a078,nw_tos=0,nw_ecn=0,nw_ttl=64,icmp_type=128,icmp_code=0 Megaflow: recirc_id=0,ct_state=-trk,eth,icmp6,in_port=3,dl_src=fa:16:3e:76:b2:58,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,nw_frag=no,icmp_type=0x80/0xfe,nd_target=:: Datapath actions: ct(zone=1),recirc(0x84) =============================================================================== recirc(0x84) - resume conntrack with default ct_state=trk|new (use --ct-next to customize) =============================================================================== Flow: recirc_id=0x84,ct_state=new|trk,ct_zone=1,eth,icmp6,reg5=0x3,reg6=0x1,in_port=3,vlan_tci=0x0000,dl_src=fa:16:3e:76:b2:58,dl_dst=fa:16:3e:0e:46:59,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,ipv6_ds t=fc00:622:627d:e8c:f816:3eff:fe0e:4659,ipv6_label=0x5a078,nw_tos=0,nw_ecn=0,nw_ttl=64,icmp_type=128,icmp_code=0 bridge("br-int") ---------------- thaw Resuming from table 72 72. ct_state=+new-est,ipv6,reg5=0x3, priority 74, cookie 0xb10d352167cfbb61 resubmit(,73) 73. ct_state=+new-est,ipv6,reg5=0x3, priority 90, cookie 0xb10d352167cfbb61 ct(commit,zone=NXM_NX_REG6[0..15]) drop -> Sets the packet to an untracked state, and clears all the conntrack fields. resubmit(,91) 91. priority 1, cookie 0xb10d352167cfbb61 resubmit(,94) 94. priority 1, cookie 0xb10d352167cfbb61 NORMAL -> no learned MAC for destination, flooding bridge("br-data") ----------------- 0. in_port=1, priority 2, cookie 0x492cbb097156b413 goto_table:1 1. priority 0, cookie 0x492cbb097156b413 goto_table:2 2. in_port=1, priority 2, cookie 0x492cbb097156b413 drop bridge("br-tun") ---------------- 0. in_port=1, priority 1, cookie 0xb9492681bd7477d2 goto_table:1 1. priority 0, cookie 0xb9492681bd7477d2 goto_table:2 2. dl_dst=00:00:00:00:00:00/01:00:00:00:00:00, priority 0, cookie 0xb9492681bd7477d2 goto_table:20 20. dl_vlan=1,dl_dst=fa:16:3e:0e:46:59, priority 2, cookie 0xb9492681bd7477d2 pop_vlan set_field:0x2c1->tun_id output:3 -> output to kernel tunnel Final flow: recirc_id=0x84,eth,icmp6,reg5=0x3,reg6=0x1,in_port=3,vlan_tci=0x0000,dl_src=fa:16:3e:76:b2:58,dl_dst=fa:16:3e:0e:46:59,ipv6_src=fc00:622:627d:e8c:f816:3eff:fe76:b258,ipv6_dst=fc00:622:627d:e8c:f 816:3eff:fe0e:4659,ipv6_label=0x5a078,nw_tos=0,nw_ecn=0,nw_ttl=64,icmp_type=128,icmp_code=0 Megaflow: pkt_mark=0,recirc_id=0x84,ct_state=+new-est-rel-rpl,eth,ipv6,in_port=3,dl_src=fa:16:3e:76:b2:58,dl_dst=fa:16:3e:0e:46:59,nw_ecn=0,nw_frag=no Datapath actions: ct(commit,zone=1),set(tunnel(tun_id=0x2c1,src=172.20.0.247,dst=172.20.0.54,ttl=64,flags(df|key))),6,push_vlan(vid=1,pcp=0),1 Thanks Liam
_______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
