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Message #80301
[Bug 1844915] Re: Duplicate packets with two networks connected by router
** Changed in: neutron
Status: Incomplete => Opinion
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https://bugs.launchpad.net/bugs/1844915
Title:
Duplicate packets with two networks connected by router
Status in neutron:
Opinion
Bug description:
The environment ：
Rocky : 3 network + 3 controller + 2compute DVR with L3_HA
When I use add port to router and update router ， In order to
connect 2 subnets
VM1 ping VM2：
64 bytes from 172.16.1.10: seq=0 ttl=63 time=1.213 ms
64 bytes from 172.16.1.10: seq=0 ttl=63 time=1.093 ms (DUP!)
64 bytes from 172.16.1.10: seq=0 ttl=63 time=1.205 ms (DUP!)
64 bytes from 172.16.1.10: seq=0 ttl=63 time=1.294 ms (DUP!)
64 bytes from 172.16.1.10: seq=0 ttl=63 time=1.369 ms (DUP!)
Steps:
1. neutron port-create vlan954 （ vlan954 can map to a physical
network ）
2. openstack router port add vpc_connect
e3e33741-56e5-4fa0-8b39-d0215eb080c9 （10.135.130.23）
3. openstack router set --route
destination=172.16.1.0/24,gateway=10.135.130.106 vpc_connect
10.135.130.106 port and subnet (172.16.1.0) is in another OpenStack
cluster（ Don't use DVR ）
4. In another OpenStack cluster ,Do something similar above
I guess the problem is the router port which is for network
connection （10.135.130.23）， Because I use floating IP ping
10.135.130.23 The same thing happened
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc pfifo_fast qlen 1000
link/ether fa:16:3e:19:78:61 brd ff:ff:ff:ff:ff:ff
inet 192.168.100.10/24 brd 192.168.100.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fe19:7861/64 scope link
valid_lft forever preferred_lft forever
$
$ ping 10.135.130.23
PING 10.135.130.23 (10.135.130.23): 56 data bytes
64 bytes from 10.135.130.23: seq=0 ttl=63 time=0.690 ms
64 bytes from 10.135.130.23: seq=0 ttl=63 time=0.846 ms (DUP!)
64 bytes from 10.135.130.23: seq=0 ttl=63 time=0.944 ms (DUP!)
64 bytes from 10.135.130.23: seq=0 ttl=63 time=1.032 ms (DUP!)
64 bytes from 10.135.130.23: seq=0 ttl=63 time=1.096 ms (DUP!)
64 bytes from 10.135.130.23: seq=1 ttl=63 time=0.753 ms
64 bytes from 10.135.130.23: seq=1 ttl=63 time=0.865 ms (DUP!)
64 bytes from 10.135.130.23: seq=1 ttl=63 time=0.882 ms (DUP!)
64 bytes from 10.135.130.23: seq=1 ttl=63 time=0.894 ms (DUP!)
64 bytes from 10.135.130.23: seq=1 ttl=63 time=0.906 ms (DUP!)
[root@network3 ~]# neutron router-port-list vpc_connect
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+--------------------------------------+-------------------------------------------------+----------------------------------+-------------------+---------------------------------------------------------------------------------------+
| id | name | tenant_id | mac_address | fixed_ips |
+--------------------------------------+----------------------------------
| 7877c303-96e1-4a1f-8175-36e70cab4490 | | e2f2bedbdf794ad0a45cf37edc72252e | fa:16:3e:fe:8b:58 | {"subnet_id": "7d2d38c8-e091-4c4d-b814-ce036a7082a9", "ip_address": "172.31.17.1"} |
| 7ba36a6f-e6b8-427e-a8b8-2ea1cc6e6697 | HA port tenant e2f2bedbdf794ad0a45cf37edc72252e | | fa:16:3e:df:99:b9 | {"subnet_id": "6e26e835-e602-40eb-9242-e9b17148b8ea", "ip_address": "169.254.192.19"} |
| e3e33741-56e5-4fa0-8b39-d0215eb080c9 | connect_port | e2f2bedbdf794ad0a45cf37edc72252e | fa:16:3e:80:5b:bc | {"subnet_id": "d75231c6-7666-466b-960d-b6d8a9196648", "ip_address": "10.135.130.23"} |
| e713f26a-ebf8-4110-b43e-f940b4a6f6a6 | HA port tenant e2f2bedbdf794ad0a45cf37edc72252e | | fa:16:3e:95:ff:00 | {"subnet_id": "6e26e835-e602-40eb-9242-e9b17148b8ea", "ip_address": "169.254.192.3"} |
| f2042d10-86c1-4b0f-8fb5-6b55efa63ea7 | HA port tenant e2f2bedbdf794ad0a45cf37edc72252e | | fa:16:3e:1e:69:aa | {"subnet_id": "6e26e835-e602-40eb-9242-e9b17148b8ea", "ip_address": "169.254.192.2"} |
[root@network3 ~]# neutron router-show vpc_connect
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
+-------------------------+---------------------------------------------------------------+
| Field | Value |
+-------------------------+---------------------------------------------------------------+
| admin_state_up | True |
| availability_zone_hints | |
| availability_zones | nova |
| created_at | 2019-09-22T02:54:38Z |
| description | |
| distributed | True |
| external_gateway_info | |
| flavor_id | |
| ha | True |
| id | f8871714-8987-45e8-a564-ede356c2564a |
| name | vpc_connect |
| project_id | e2f2bedbdf794ad0a45cf37edc72252e |
| revision_number | 8 |
| routes | {"destination": "172.16.1.0/24", "nexthop": "10.135.130.106"} |
| status | ACTIVE |
| tags | |
| tenant_id | e2f2bedbdf794ad0a45cf37edc72252e |
| updated_at | 2019-09-22T02:58:47Z |
+-------------------------+-----------------------------------------------
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