We have been having this issue with devstack installation since Tuesday 6/2. On trying to add IPv6 address to br-ex, it fails with permission denied. Here's the output from stack.sh: + IPV6_ROUTER_GW_IP=2001:db8::1 + die_if_not_set 1299 IPV6_ROUTER_GW_IP 'Failure retrieving IPV6_ROUTER_GW_IP' + local exitcode=0 ++ set +o ++ grep xtrace + local 'xtrace=set -o xtrace' + set +o xtrace + is_neutron_ovs_base_plugin + return 0 + [[ True = \T\r\u\e ]] ++ _neutron_get_ext_gw_interface ++ [[ False == \T\r\u\e ]] ++ sudo ovs-vsctl set Bridge br-ex other_config:disable-in-band=true ++ echo br-ex + local ext_gw_interface=br-ex + local ipv6_cidr_len=64 + sudo ip -6 addr add 2001:db8::2/64 dev br-ex RTNETLINK answers: Permission denied
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