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Add route to IPv6 private subnets in ML2/OVN 

Enable IPv6 private subnet routing in ML2/OVN, it uses the behavior that
already exists in ML2/OVS: add a route from the devstack node to the
CIDRs of the default IPv6 subnet pool. Any IPv6 subnet created using the
default subnet pool and plugged into the default router is reachable
from the host (ex: ipv6-private-subnet).

Change-Id: I02ca1d94e9f4d5ad4a06182f5ac9a2434941cf08
This commit is contained in:
Gregory Thiemonge 2021-03-15 18:25:04 +01:00 committed by Brian Haley
parent aa25b741fe
commit 949f5ada60
1 changed files with 7 additions and 2 deletions
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9
lib/neutron_plugins/services/l3
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@ -392,8 +392,8 @@ function _neutron_configure_router_v6 {
openstack --os-cloud devstack-admin --os-region "$REGION_NAME" router set --external-gateway $EXT_NET_ID $ROUTER_ID
fi
# This logic is specific to using the l3-agent for layer 3
if is_service_enabled q-l3 || is_service_enabled neutron-l3; then
# This logic is specific to using OVN or the l3-agent for layer 3
if ([[ $Q_AGENT == "ovn" ]] && is_service_enabled q-svc neutron-server) || is_service_enabled q-l3 neutron-l3; then
# if the Linux host considers itself to be a router then it will
# ignore all router advertisements
# Ensure IPv6 RAs are accepted on interfaces with a default route.
@ -420,6 +420,11 @@ function _neutron_configure_router_v6 {
# Configure interface for public bridge
sudo ip -6 addr replace $ipv6_ext_gw_ip/$ipv6_cidr_len dev $ext_gw_interface
# Any IPv6 private subnet that uses the default IPV6 subnet pool
# and that is plugged into the default router (Q_ROUTER_NAME) will
# be reachable from the devstack node (ex: ipv6-private-subnet).
# Some scenario tests (such as octavia-tempest-plugin) rely heavily
# on this feature.
local replace_range=${SUBNETPOOL_PREFIX_V6}
if [[ -z "${SUBNETPOOL_V6_ID}" ]]; then
replace_range=${FIXED_RANGE_V6}