Reviewed: https://review.openstack.org/301747 Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=2aa23de58f55f7b1001508326c5ac2627ba3a429 Submitter: Jenkins Branch: master
commit 2aa23de58f55f7b1001508326c5ac2627ba3a429 Author: Sergey Nechaev <spnech...@yandex-team.ru> Date: Tue Apr 5 14:40:59 2016 +0000 Adding support of releasing DHCPv6 leases Original problem is that dhcp_release does not work with IPv6, but IPv6 leases still should be released. For example: 1. Start VM in dhcpv6-stateful network, make it acquire IPv6 address. 2. Delete VM. 3. Start another VM in same network before lease expires. There's a very high chance that the same IPv6 address will be allocated for both of these VMs (same address will be reused after first VM was deleted). On DHCP agent, hosts file would be changed, but not lease file, so dnsmasq will not give second VM address until lease expires. Reducing lease time is not a good solution here. Solution is adding invocation of dhcp_release6 utility when releasing IPv6 address. dhcp_release6 utility appears in dnsmasq 2.76. It crafts DHCP6_Release packet, sends it from passed network interface to IPv6 multicast address and waits for DHCP6_Reply. Closes-Bug: 1521666 Change-Id: I5efab81cdaf0676503b6c7da0d4b4f400d859286 ** Changed in: neutron Status: In Progress => 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/1521666 Title: DHCP agent should release IPv6 leases Status in neutron: Fix Released Bug description: dhcp_relase does not work with IPv6, but IPv6 leases still should be released. Example: 1. Start VM in dhcpv6-statefull network, make it acquire IPv6 address. 2. Delete VM. 3. Start another VM in same network before lease expires. There's a very high chance that same IPv6 address will be allocated for both these VMs (same address will be reused after first VM was delete). On DHCP agent hosts file would be changed, but lease file not, so dnsmasq will not give second VM address until lease expitres. Reducing lease time is not a good solution here... To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1521666/+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