** Changed in: neutron/icehouse Status: Fix Committed => Fix Released
-- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1447883 Title: Restrict netmask of CIDR to avoid DHCP resync is not enough Status in OpenStack Neutron (virtual network service): Fix Committed Status in neutron icehouse series: Fix Released Status in neutron kilo series: Fix Released Status in OpenStack Security Advisories: Won't Fix Bug description: Restrict netmask of CIDR to avoid DHCP resync is not enough. https://bugs.launchpad.net/neutron/+bug/1443798 I'd like to prevent following case: [Condition] - Plugin: ML2 - subnet with "enable_dhcp" is True [Operations] A. Specify "[]"(empty list) at "allocation_pools" when create/update-subnet --------------------------------------------------------------------------- $ $ curl -X POST -d '{"subnet": {"name": "test_subnet", "cidr": "192.168.200.0/24", "ip_version": 4, "network_id": "649c5531-338e-42b5-a2d1-4d49140deb02", "allocation_pools": []}}' -H "x-auth-token:$TOKEN" -H "content-type:application/json" http://127.0.0.1:9696/v2.0/subnets Then, the dhcp-agent creates own DHCP-port, it is reproduced resync bug. B. Create port and exhaust allocation_pools --------------------------------------------------------------- 1. Create subnet with 192.168.1.0/24. And, DHCP-port has alteady created. gateway_ip: 192.168.1.1 DHCP-port: 192.168.1.2 allocation_pools{"start": 192.168.1.2, "end": 192.168.1.254} the number of availability ip_addresses is 252. 2. Create non-dhcp port and exhaust ip_addresses in allocation_pools In this case, user creates a port 252 times. the number of availability ip_addresses is 0. 3. User deletes the DHCP-port(192.168.1.2) the number of availability ip_addresses is 1. 4. User creates a non-dhcp port. the number of availability ports are 0. Then, dhcp-agent tries to create DHCP-port. It is reproduced resync bug. To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1447883/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp