Public bug reported: According to [1], when network contains more that one IPv4 subnets, report these subnets in 'classless-static-routes' DHCP option. However, the 'classless-static-routes' of dhcp disabled subnets will be deleted after dhcp agents restart because the DhcpRpcCallback.get_active_networks_info method used for synchronize networks filter subnets with "enable_dhcp=True". Then VMs can't access the other VMs in the dhcp disabled subnets in the same network.
[1] https://review.openstack.org/#/c/125043/ How to reproduce: 1. create a network with two subnets in it, disable one subnet's dhcp. +--------------------------------------+----------------------+----------------+-------------+ | id | name | cidr | enable_dhcp | +--------------------------------------+----------------------+----------------+-------------+ | 1b14508b-a381-4d73-9128-c05661497c49 | subnet_dhcp_enabled | 192.168.1.0/24 | True | | 3572a614-79f0-4b4d-8850-60e74225745a | subnet_dhcp_disabled | 192.168.2.0/24 | False | +--------------------------------------+----------------------+----------------+-------------+ At this time, dhcp opts should like this: $ cat neutron/dhcp/004a4f00-f8cf-4c11-a9e7-52bc9961c297/opts tag:tag0,option:classless-static-route,192.168.2.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1 tag:tag0,249,192.168.2.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1 tag:tag0,option:router,192.168.1.1 2. restart the dhcp agent, the "classless-static-routes" disappear $ cat neutron/dhcp/004a4f00-f8cf-4c11-a9e7-52bc9961c297/opts tag:tag0,option:router,192.168.1.1 ** Affects: neutron Importance: Undecided Assignee: Quan Tian (tianquan23) Status: In Progress -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1652654 Title: Routes for neighbour subnets missing after dhcp agents restart Status in neutron: In Progress Bug description: According to [1], when network contains more that one IPv4 subnets, report these subnets in 'classless-static-routes' DHCP option. However, the 'classless-static-routes' of dhcp disabled subnets will be deleted after dhcp agents restart because the DhcpRpcCallback.get_active_networks_info method used for synchronize networks filter subnets with "enable_dhcp=True". Then VMs can't access the other VMs in the dhcp disabled subnets in the same network. [1] https://review.openstack.org/#/c/125043/ How to reproduce: 1. create a network with two subnets in it, disable one subnet's dhcp. +--------------------------------------+----------------------+----------------+-------------+ | id | name | cidr | enable_dhcp | +--------------------------------------+----------------------+----------------+-------------+ | 1b14508b-a381-4d73-9128-c05661497c49 | subnet_dhcp_enabled | 192.168.1.0/24 | True | | 3572a614-79f0-4b4d-8850-60e74225745a | subnet_dhcp_disabled | 192.168.2.0/24 | False | +--------------------------------------+----------------------+----------------+-------------+ At this time, dhcp opts should like this: $ cat neutron/dhcp/004a4f00-f8cf-4c11-a9e7-52bc9961c297/opts tag:tag0,option:classless-static-route,192.168.2.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1 tag:tag0,249,192.168.2.0/24,0.0.0.0,0.0.0.0/0,192.168.1.1 tag:tag0,option:router,192.168.1.1 2. restart the dhcp agent, the "classless-static-routes" disappear $ cat neutron/dhcp/004a4f00-f8cf-4c11-a9e7-52bc9961c297/opts tag:tag0,option:router,192.168.1.1 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1652654/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
