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[Abishek Subramanian <absubram@xxxxxxxxx>]

Public bug reported:

The ipv6 router BP
(https://blueprints.launchpad.net/neutron/+spec/ipv6-router) added a new
L3 agent config called ipv6_gateway wherein an admin can configure the
IPv6 LLA of the upstream physical router, so that the neutron virtual
router has a default V6 gateway route to the upstream router.

This solution is however not scalable when there are multiple external routers per L3 agent. 
Per review comments - https://review.openstack.org/#/c/156283/42/etc/l3_agent.ini
It is better to move this config to the CLI.

This change aims to make this exact change by updating the router_update
API so that the neutron router-gateway-set CLI will now have a new
option to set an ipv6_gateway.

** Affects: neutron
     Importance: Undecided
     Assignee: Abishek Subramanian (absubram)
         Status: New


** Tags: rfe

** Tags added: rfe

** Changed in: neutron
     Assignee: (unassigned) => Abishek Subramanian (absubram)

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https://bugs.launchpad.net/bugs/1460720

Title:
  Move ipv6_gateway L3 config to CLI

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  The ipv6 router BP
  (https://blueprints.launchpad.net/neutron/+spec/ipv6-router) added a
  new L3 agent config called ipv6_gateway wherein an admin can configure
  the IPv6 LLA of the upstream physical router, so that the neutron
  virtual router has a default V6 gateway route to the upstream router.

  This solution is however not scalable when there are multiple external routers per L3 agent. 
  Per review comments - https://review.openstack.org/#/c/156283/42/etc/l3_agent.ini
  It is better to move this config to the CLI.

  This change aims to make this exact change by updating the
  router_update API so that the neutron router-gateway-set CLI will now
  have a new option to set an ipv6_gateway.

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