IPv6 Entries not appearing always while associating subnet to Router where router enabled with SNAT.

Steps:

1. Create Network1 --> PASS
2. Create S1(IPV4) --> PASS
3. Create Port and Boot VM's. --> PASS
4. Create Router. --> PASS
5. Add S1 to Router and Validate FIB --> PASS
6. Create BGPVPN. -->PASS
7. Create External Network --> PASS
8. Create subnet for external network --> PASS
9. Associate External network to VPN --> PASS
10. Enable SNAT using router-gateway-set with external network --> PASS
11. Create IPV6 Subnet and boot VM's
12. Associate S2(IPv6) to R1 and validate FIB –> FAIL
13. If step 12 succeeded, then repeat dissociation and association for S2(IPv6) with Router multiple time and validate FIB each time. --> FAIL

Commands Used :

SNAT :

1. Create Network/Subnet
2. Create Custom SG
3. Create Router and add subnet to router
4. Create port with custom SG and Launch VM's
5. Create BGP VPN.

neutron bgpvpn-create --name BGPVPN --route-distinguishers 1:2 --route-targets 1:2 --import-targets 1:2 --export-targets 1:2

1. Create External Network

neutron net-create extnetwork --router:external=True --provider:network_type gre

1. Create the subnet for external  network

neutron subnet-create extnetwork --name extsubnet --enable-dhcp --allocation-pool start=100.100.100.10,end=100.100.100.20 --gateway 100.100.100.1 100.100.100.0/24

1. Associate the External Network to L3VPn

neutron bgpvpn-net-assoc-create --network fde82721-2541-40d1-bfaf-606463b3cd71 BGPVPN

1. Add the default gw to extnetwork in ROUTER0 and enable SNAT

neutron router-gateway-set Router0 extnetwork ----enable-snat