I suggest we don't modify API behaviour based on broken agent setup. It
would require a lot of coordination... for what? Setups are not supposed
to be broken, we should rely on runtime deps being installed.
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Touch seeded packages, which is subscribed to dnsmasq in Ubuntu.
dhcp_release6 can be called when it is not present
Status in neutron:
Status in dnsmasq package in Ubuntu:
If someone enables dhcpv6-stateful addressing on a subnet, but they
are running an old version of dnsmasq (<2.76), then the dhcp agent
could try and run dhcp_release6 even though it isn't present. An
Checking it's present first would fix this problem.
Since the change to call dhcp_release6 was just added in
https://review.openstack.org/#/c/301747/ we should fix this before
Newton ships and people complain.
There is also an effort to get Cirros to support DHCPv6 so that we can test
this in the gate,
https://bugs.launchpad.net/cirros/+bug/1487041 - hopefully that gets done so
we can add a functional test.
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