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Message #01112
[Bug 1152794] Re: Wrong IP configuration if router interface is attached with port_id
Indeed I remembered there was a reason for this behaviour, but I forgot
about it.
This is why I waited for comments before setting target/importance.
I think we can set this bug to invalid
** Changed in: quantum
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1152794
Title:
Wrong IP configuration if router interface is attached with port_id
Status in OpenStack Quantum (virtual network service):
Invalid
Bug description:
In a nuthsell:
if a router interface is created using port_id instead of subnet_id, the router interface will have an IP picked from the subnet's allocation pool, and not the gateway_ip. However, the DHCP agent will still send the gateway_ip in the 'router' option.
The default route on the guest is therefore wrong as the nexthop is not correct.
As a result I'm observing cirros instances stuck as boot. tcpdump
shows ARP requests for 10.0.1.1 (gateway_ip) whereas the router
interface is at 10.0.1.2. The fact that the image is stuck might be
cirros-specific, but the configuration still needs to be fixed.
How to reproduce:
Assume we have a network called net2, with a subnet called sub2
(10.0.1.0/24) and router called router2:
quantum port-create net2 --name rtr_port
Created a new port:
+-----------------+---------------------------------------------------------------------------------+
| Field | Value |
+-----------------+---------------------------------------------------------------------------------+
| admin_state_up | True |
| device_id | |
| device_owner | |
| fixed_ips | {"subnet_id": "6f83134b-f168-4da4-86a5-411b762c344e", "ip_address": "10.0.1.2"} |
| id | 70592664-f5ab-4732-8624-460648e1f591 |
| mac_address | fa:16:3e:a7:a3:7b |
| name | rtr_port |
| network_id | ecb149aa-53c1-47fb-a5ed-48900d450812 |
| security_groups | c7287c73-f7b1-456a-af5a-5a07604996c0 |
| status | DOWN |
| tenant_id | 965057f34e274632aedbb8aedf89e6e4 |
+-----------------+---------------------------------------------------------------------------------+
curl -i http://192.168.0.3:9696/v2.0/routers/26d08299-6e49-4be2-a396-95ed6e9f9077/add_router_interface.json -X PUT -H "User-Agent: python-quantumclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: eeb88f6b6be446299f371a2027acc051" -d '{"port_id": "70592664-f5ab-4732-8624-460648e1f591"}'
HTTP/1.1 200 OK
Content-Type: application/json; charset=UTF-8
Content-Length: 104
Date: Fri, 08 Mar 2013 22:19:17 GMT
{"subnet_id": "6f83134b-f168-4da4-86a5-411b762c344e", "port_id":
"70592664-f5ab-4732-8624-460648e1f591"}
salvatore@ubuntu:~/git/devstack$ quantum port-show rtr_port
+-----------------+---------------------------------------------------------------------------------+
| Field | Value |
+-----------------+---------------------------------------------------------------------------------+
| admin_state_up | True |
| device_id | 26d08299-6e49-4be2-a396-95ed6e9f9077 |
| device_owner | network:router_interface |
| fixed_ips | {"subnet_id": "6f83134b-f168-4da4-86a5-411b762c344e", "ip_address": "10.0.1.2"} |
| id | 70592664-f5ab-4732-8624-460648e1f591 |
| mac_address | fa:16:3e:a7:a3:7b |
| name | rtr_port |
| network_id | ecb149aa-53c1-47fb-a5ed-48900d450812 |
| security_groups | c7287c73-f7b1-456a-af5a-5a07604996c0 |
| status | ACTIVE |
| tenant_id | 965057f34e274632aedbb8aedf89e6e4 |
+-----------------+---------------------------------------------------------------------------------+
salvatore@ubuntu:~/git/devstack$ quantum subnet-show sub2
+------------------+--------------------------------------------+
| Field | Value |
+------------------+--------------------------------------------+
| allocation_pools | {"start": "10.0.1.2", "end": "10.0.1.254"} |
| cidr | 10.0.1.0/24 |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 10.0.1.1 |
| host_routes | |
| id | 6f83134b-f168-4da4-86a5-411b762c344e |
| ip_version | 4 |
| name | sub2 |
| network_id | ecb149aa-53c1-47fb-a5ed-48900d450812 |
| tenant_id | 965057f34e274632aedbb8aedf89e6e4 |
+------------------+--------------------------------------------+
salvatore@ubuntu:~/git/devstack$ nova boot --image f039f91f-03ac-418e-a630-5dd3fa54379e --flavor 1 --nic net-id=ecb149aa-53c1-47fb-a5ed-48900d450812 testvm2
+-----------------------------+--------------------------------------+
| Property | Value |
+-----------------------------+--------------------------------------+
| status | BUILD |
| updated | 2013-03-08T22:38:56Z |
| OS-EXT-STS:task_state | scheduling |
| key_name | None |
| image | cirros-0.3.1-x86_64-uec |
| hostId | |
| OS-EXT-STS:vm_state | building |
| flavor | m1.tiny |
| id | 8263e822-88ff-4666-bb5f-c151e82d8578 |
| security_groups | [{u'name': u'default'}] |
| user_id | ac0804edb3f946fa817efc4124e772d5 |
| name | testvm2 |
| adminPass | Kd77EbLiobHn |
| tenant_id | 965057f34e274632aedbb8aedf89e6e4 |
| created | 2013-03-08T22:38:56Z |
| OS-DCF:diskConfig | MANUAL |
| metadata | {} |
| accessIPv4 | |
| accessIPv6 | |
| progress | 0 |
| OS-EXT-STS:power_state | 0 |
| OS-EXT-AZ:availability_zone | None |
| config_drive | |
+-----------------------------+--------------------------------------+
salvatore@ubuntu:~/git/devstack$ sudo ip netns exec qdhcp-ecb149aa-53c1-47fb-a5ed-48900d450812 tcpdump -i tapf6840c4f-b3
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on tapf6840c4f-b3, link-type EN10MB (Ethernet), capture size 65535 bytes
^C23:39:47.812467 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:48.812396 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:49.811678 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:50.811738 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:51.812615 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:54.983503 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:55.980314 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:56.980304 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:57.979845 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:58.980249 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:39:59.979622 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:03.152975 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:04.151450 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:05.151654 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:06.152875 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:07.151657 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:08.152593 ARP, Request who-has 10.0.1.1 tell 10.0.1.4, length 28
23:40:09.313161 ARP, Request who-has 10.0.1.3 tell 10.0.1.4, length 28
23:40:09.313174 ARP, Reply 10.0.1.3 is-at fa:16:3e:6f:29:5a (oui Unknown), length 28
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