hi all: I set up quantum without namespace support, now VMs can ping gateway(100.0.0.1) but I can not capture any packet at gateway interface, br-int or br-tun:
root@controller:/var/log/openvswitch# tcpdump -i qr-c5496165-c7 -nn tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on qr-c5496165-c7, link-type EN10MB (Ethernet), capture size 65535 bytes ^C 0 packets captured 0 packets received by filter 0 packets dropped by kernel root@controller:/var/log/openvswitch# tcpdump -i br-int -nn tcpdump: WARNING: br-int: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br-int, link-type EN10MB (Ethernet), capture size 65535 bytes ^C 0 packets captured 0 packets received by filter 0 packets dropped by kernel root@controller:/var/log/openvswitch# tcpdump -i br-tun -nn tcpdump: WARNING: br-tun: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br-tun, link-type EN10MB (Ethernet), capture size 65535 bytes ^C 0 packets captured 0 packets received by filter 0 packets dropped by kernel When I ping the DHCP server, packets are captured at DHCP server interface, but not at br-int or br-tun: root@controller:/var/log/openvswitch# tcpdump -i tap160480aa-84 -nn tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on tap160480aa-84, link-type EN10MB (Ethernet), capture size 65535 bytes 09:41:58.922771 IP 100.0.0.4 > 100.0.0.3: ICMP echo request, id 62726, seq 26, length 64 09:41:58.922885 IP 100.0.0.3 > 100.0.0.4: ICMP echo reply, id 62726, seq 26, length 64 It is strange, 1) why packet is captured at DHCP server interface, not at gateway interface, 2) why packet is not captured at br-int or br-tun(GRE packets are captured at eth2)? root@controller:/var/log/openvswitch# tcpdump -i eth2 proto gre -nn tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes 09:50:06.430375 IP 30.0.0.11 > 30.0.0.1: GREv0, key=0x2, length 110: IP 100.0.0.4 > 100.0.0.1: ICMP echo request, id 64774, seq 2, length 64 09:50:06.430452 IP 30.0.0.1 > 30.0.0.11: GREv0, key=0x2, length 110: IP 100.0.0.1 > 100.0.0.4: ICMP echo reply, id 64774, seq 2, length 64 09:50:07.430514 IP 30.0.0.11 > 30.0.0.1: GREv0, key=0x2, length 110: IP 100.0.0.4 > 100.0.0.1: ICMP echo request, id 64774, seq 3, length 64 09:50:07.430616 IP 30.0.0.1 > 30.0.0.11: GREv0, key=0x2, length 110: IP 100.0.0.1 > 100.0.0.4: ICMP echo reply, id 64774, seq 3, length 64 ca3b3f14-7564-4a88-b0f2-417ccc6d60bf Bridge br-tun Port "gre-2" Interface "gre-2" type: gre options: {in_key=flow, out_key=flow, remote_ip="30.0.0.11"} Port patch-int Interface patch-int type: patch options: {peer=patch-tun} Port br-tun Interface br-tun type: internal Bridge "virbr0" Port "virbr0" Interface "virbr0" type: internal Bridge br-int Controller "tcp:30.0.0.1:6633" Port "qr-c5496165-c7" tag: 3 Interface "qr-c5496165-c7" type: internal Port br-int Interface br-int type: internal Port "tapaebb6140-31" tag: 4095 Interface "tapaebb6140-31" type: internal Port "tap5b5891ac-94" tag: 2 Interface "tap5b5891ac-94" type: internal Port "tap160480aa-84" tag: 3 Interface "tap160480aa-84" type: internal Port "qr-48c69382-4f" tag: 2 Interface "qr-48c69382-4f" type: internal Port "tapf6040ba0-b5" tag: 4095 Interface "tapf6040ba0-b5" type: internal Port patch-tun Interface patch-tun type: patch options: {peer=patch-int} Port "tap09a002af-66" tag: 4095 Interface "tap09a002af-66" type: internal Port "tapddc3ce63-2b" tag: 4095 Interface "tapddc3ce63-2b" type: internal Port "tap0ded1c0f-df" tag: 1 Interface "tap0ded1c0f-df" type: internal Port "qr-9b9a3229-19" tag: 4095 Interface "qr-9b9a3229-19" type: internal Port "qr-8af2e01f-bb" tag: 4095 Interface "qr-8af2e01f-bb" type: internal Bridge br-ex Port br-ex Interface br-ex type: internal Port "qg-0eda5152-09" Interface "qg-0eda5152-09" type: internal Port "eth0" Interface "eth0" ovs_version: "1.4.0+build0" root@controller:~# ifconfig br-ex Link encap:Ethernet HWaddr e0:db:55:1f:99:b4 inet addr:192.168.19.1 Bcast:192.168.19.255 Mask:255.255.255.0 inet6 addr: fe80::e2db:55ff:fe1f:99b4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:329437 errors:0 dropped:0 overruns:0 frame:0 TX packets:349843 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:50084384 (50.0 MB) TX bytes:174803790 (174.8 MB) br-int Link encap:Ethernet HWaddr e2:ed:9e:9b:69:42 inet6 addr: fe80::e0ed:9eff:fe9b:6942/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1226 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:225034 (225.0 KB) TX bytes:468 (468.0 B) br-tun Link encap:Ethernet HWaddr 46:ca:bf:10:0e:45 inet6 addr: fe80::44ca:bfff:fe10:e45/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:88 (88.0 B) TX bytes:468 (468.0 B) eth0 Link encap:Ethernet HWaddr e0:db:55:1f:99:b4 inet6 addr: fe80::e2db:55ff:fe1f:99b4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:366810 errors:0 dropped:0 overruns:0 frame:0 TX packets:401198 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:53802410 (53.8 MB) TX bytes:179619788 (179.6 MB) Interrupt:35 eth1 Link encap:Ethernet HWaddr e0:db:55:1f:99:b5 inet addr:169.254.169.254 Bcast:0.0.0.0 Mask:255.255.255.255 inet6 addr: fe80::e2db:55ff:fe1f:99b5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:752581 errors:0 dropped:0 overruns:0 frame:0 TX packets:715623 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:186338905 (186.3 MB) TX bytes:254970197 (254.9 MB) Interrupt:38 eth2 Link encap:Ethernet HWaddr e0:db:55:1f:99:b6 inet addr:30.0.0.1 Bcast:30.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::e2db:55ff:fe1f:99b6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:86510 errors:0 dropped:0 overruns:0 frame:0 TX packets:40477 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8169880 (8.1 MB) TX bytes:5679064 (5.6 MB) Interrupt:34 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:6563002 errors:0 dropped:0 overruns:0 frame:0 TX packets:6563002 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1316707664 (1.3 GB) TX bytes:1316707664 (1.3 GB) *qr-c5496165-c7 Link encap:Ethernet HWaddr fa:16:3e:79:09:ca * * inet addr:100.0.0.1 Bcast:100.0.0.255 Mask:255.255.255.0* * inet6 addr: fe80::f816:3eff:fe79:9ca/64 Scope:Link* * UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1* * RX packets:3755 errors:0 dropped:3147 overruns:0 frame:0* * TX packets:6 errors:0 dropped:0 overruns:0 carrier:0* * collisions:0 txqueuelen:0 * * RX bytes:344043 (344.0 KB) TX bytes:468 (468.0 B)* tap09a002af-66 Link encap:Ethernet HWaddr fa:16:3e:9e:11:e0 inet addr:192.168.19.129 Bcast:192.168.19.255 Mask:255.255.255.128 inet6 addr: fe80::f816:3eff:fe9e:11e0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3632 errors:0 dropped:3443 overruns:0 frame:0 TX packets:9 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:243129 (243.1 KB) TX bytes:594 (594.0 B) tap0ded1c0f-df Link encap:Ethernet HWaddr fa:16:3e:0a:08:7a inet addr:192.168.19.130 Bcast:192.168.19.255 Mask:255.255.255.0 inet6 addr: fe80::f816:3eff:fe0a:87a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3346 errors:0 dropped:3149 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:225063 (225.0 KB) TX bytes:468 (468.0 B) *tap160480aa-84 Link encap:Ethernet HWaddr fa:16:3e:54:77:83 * * inet addr:100.0.0.3 Bcast:100.0.0.255 Mask:255.255.255.0* * inet6 addr: fe80::f816:3eff:fe54:7783/64 Scope:Link* * UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1* * RX packets:10572 errors:0 dropped:3453 overruns:0 frame:0* * TX packets:6105 errors:0 dropped:0 overruns:0 carrier:0* * collisions:0 txqueuelen:0 * * RX bytes:1125984 (1.1 MB) TX bytes:697815 (697.8 KB)*
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