Comment 9 for bug 1953165

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Maximilian Stinsky (mstinsky) wrote :

We just ran into this exact issue after upgrading our openstack environment to victoria.

As our installation is running on version 17.4.1 I dont think that this is a duplicate of https://bugs.launchpad.net/neutron/+bug/1930414, same as stigtelfer said the fix for this bug is already applied in this version.

As we require ipv6 to be enabled we are at the moment evaluating a workaround to set the following sysctl values on our nodes that are hosting the dhcp namespaces:
net.core.devconf_inherit_init_net=1
net.ipv6.conf.default.accept_dad=0

As kamil-madac already mentioned this bug has very high impact as we are losing dhcp namespaces.