Public bug reported: The resolv.conf gets populated with whatever the last interface that came up over DHCP provided.
Even if the 2nd network/subnet in neutron doesn’t define DNS, it still overwrites resolv.conf. By default the dnsmasq agent will use itself, and it's pairs as DNS servers if no dns_servers are provided for the neutron subnet. Ref: https://github.com/openstack/neutron/blob/master/neutron/agent/linux/dhcp.py#L877:L887 https://github.com/openstack/neutron/blob/master/neutron/agent/linux/dhcp.py#L970 This is not always desired. Is there a way to disable this behaviour, and simply not offer any dns servers if there are none specified in the neutron subnet? ** Affects: neutron Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1691047 Title: dhcp agent - multiple interfaces, last iface coming up overwrite resolv.conf Status in neutron: New Bug description: The resolv.conf gets populated with whatever the last interface that came up over DHCP provided. Even if the 2nd network/subnet in neutron doesn’t define DNS, it still overwrites resolv.conf. By default the dnsmasq agent will use itself, and it's pairs as DNS servers if no dns_servers are provided for the neutron subnet. Ref: https://github.com/openstack/neutron/blob/master/neutron/agent/linux/dhcp.py#L877:L887 https://github.com/openstack/neutron/blob/master/neutron/agent/linux/dhcp.py#L970 This is not always desired. Is there a way to disable this behaviour, and simply not offer any dns servers if there are none specified in the neutron subnet? To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1691047/+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
