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[David Reno <dcreno@xxxxxxxxx>]

Public bug reported:

Summary:
========
Newton nova on CentOS 7.3 is setting the qbr bridge to disable IPv6 (virt/libvirt/vif.py:536)

This is preventing IPv6 neighbor discovery from getting through the
bridge and thus all IPv6 connectivity.

Details:
========
Version: Newton on CentOS 7.3 minimal (CentOS-7-x86_64-Minimal-1611.iso) as per these instructions: http://docs.openstack.org/newton/install-guide-rdo/

Seemingly relevant sections of nova-compute.log:
ova-compute.log:2017-02-09 10:41:55.878 8393 DEBUG oslo_service.service [req-06596ba4-20c6-40bc-b6a0-37f84aaa2e49 - - - - -] os_vif_linux_bridge.use_ipv6   = True log_opt_values /usr/lib/python2.7/site-packages/oslo_config/cfg.py:2630
nova-compute.log:2017-02-09 11:04:12.281 8393 DEBUG oslo.privsep.daemon [-] Running cmd (subprocess): tee /proc/sys/net/ipv6/conf/qbr91c6f3e4-bd/disable_ipv6 out_of_band /usr/lib/python2.7/site-packages/oslo_privsep/daemon.py:194

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: ipv6 network

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https://bugs.launchpad.net/bugs/1663317

Title:
  IPv6 neighbor discovery not getting through qbr bridge

Status in OpenStack Compute (nova):
  New

Bug description:
  Summary:
  ========
  Newton nova on CentOS 7.3 is setting the qbr bridge to disable IPv6 (virt/libvirt/vif.py:536)

  This is preventing IPv6 neighbor discovery from getting through the
  bridge and thus all IPv6 connectivity.

  Details:
  ========
  Version: Newton on CentOS 7.3 minimal (CentOS-7-x86_64-Minimal-1611.iso) as per these instructions: http://docs.openstack.org/newton/install-guide-rdo/

  Seemingly relevant sections of nova-compute.log:
  ova-compute.log:2017-02-09 10:41:55.878 8393 DEBUG oslo_service.service [req-06596ba4-20c6-40bc-b6a0-37f84aaa2e49 - - - - -] os_vif_linux_bridge.use_ipv6   = True log_opt_values /usr/lib/python2.7/site-packages/oslo_config/cfg.py:2630
  nova-compute.log:2017-02-09 11:04:12.281 8393 DEBUG oslo.privsep.daemon [-] Running cmd (subprocess): tee /proc/sys/net/ipv6/conf/qbr91c6f3e4-bd/disable_ipv6 out_of_band /usr/lib/python2.7/site-packages/oslo_privsep/daemon.py:194

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