dnsmasq also provides DNS lookups. This optimization doesn't seem worth
it.
** Changed in: neutron
Status: In Progress => Won't Fix
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https://bugs.launchpad.net/bugs/1407573
Title:
DHCP agent should not create DHCP port and spawn dnsmasq when subnet
is IPv6 and ipv6-address-mode is None or SLAAC
Status in neutron:
Won't Fix
Bug description:
According to the design of IPv6 subnet ra mode and address mode, when
ipv6 address mode is None or SLAAC, VM either obtain address from
OpenStack/external RADVD or obtain address from external dhcp server.
It's not necessary to create DHCP port or spawn dnsmasq process for
such ipv6 subnets. Right now, the DHCP port is created and dnsmasq
process is spawned (but not used).
ra mode and address mode design:
https://github.com/openstack/neutron-specs/blob/master/specs/juno/ipv6
-radvd-ra.rst
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