Set up third-party VPNs for IPv4 and IPv6 traffic

This page provides instructions for configuring third-party VPN devices to support IPv4 and IPv6 (dual-stack) traffic with Cloud VPN.

Note: These instructions provide only configuration examples for IPv4 BGP sessions that use multiprotocol BGP (MP-BGP) to exchange both IPv4 and IPv6 routes. These instructions don't provide IPv6 BGP configuration examples. IPv6 BGP session support is in (Preview).

To exchange dual-stack traffic in your Cloud VPN tunnels, you must configure your peer VPN gateway device with IPv6 next hop addresses. In dual-stack HA VPN tunnels, both IPv4 and IPv6 route exchange occur over BGP sessions with MP-BGP that are configured with link-local IPv4 addresses. Both the Cloud Router and your peer VPN device require IPv6 next hop configuration to route IPv6 traffic to the Virtual Private Cloud and peer networks.

Only HA VPN gateways support dual-stack configurations. Classic VPN does not support IPv6 traffic. In addition, you must configure your peer VPN device to use IKE v2 for its HA VPN tunnels.

Third-party VPN support for dual-stack traffic

The following table summarizes third-party VPN device support for dual-stack traffic over IPsec tunnels.

Note: This table reflects known support as of August 30, 2022. Vendors are adding support for dual-stack traffic. Check your vendor platform documentation for the latest updates.

Vendor platform	Version tested for dual-stack configuration	IPv6 traffic over IPv4 IPsec tunnel	Dual-stack address family	Interoperable configuration for dual-stack traffic
Cisco IOS/IOS-XE	n/a	Not supported	Not supported	Use GRE tunnels and a virtual router to carry IPsec traffic over GRE.
Check Point	n/a	Not supported	Not supported	Use GRE tunnels and a virtual router to carry IPsec traffic over GRE.
Juniper JunOS	20.2R3-S2.5	Supported	Supported	Supports HA VPN tunnels that can carry both IPv4 and IPv6 traffic.
Palo Alto Networks PAN-OS	9.1	Supported	Not supported	Requires separate HA VPN tunnels configured for either IPv4 or IPv6 traffic, but not both.

Juniper JunOS

The following procedure describes how to set up your Juniper JunOS VPN device to support IPv4 and IPv6 traffic in your HA VPN tunnels.

Although you configure IPv6 addresses on the tunnel interfaces of the device, the IPv6 addresses are solely used for IPv6 next hop configuration. IPv6 routes are advertised through IPv6 NLRI over IPv4 BGP peering.

Before you begin

In Google Cloud, set up one dual-stack HA VPN gateway and two HA VPN tunnels. Both HA VPN tunnels carry IPv4 and IPv6 traffic.

Record the two external IPv4 addresses that Google Cloud assigns to the two HA VPN gateway interfaces.

Record the following configuration values for each tunnel:

• The link-local IPv4 address of the BGP peer, which is your Juniper JunOS device
• The link-local IPv4 address of the Cloud Router used for BGP peering
• The IPv6 next hop address assigned to the peer or peerIpv6NexthopAddress
• The ASN you assigned to the Cloud Router for your BGP sessions
• The ASN you assigned to the BGP peer, which is your Juniper JunOS device
• The pre-shared key

To find the details for your BGP session configuration, see View BGP session configuration.

Configure JunOS

To configure JunOS devices, perform the following steps:

1. For each VPN tunnel interface, configure the BGP peer IPv6 next hop addresses that you retrieved from the Cloud Router. These interfaces are the same interfaces that are assigned link-local addresses for IPv4 peering.

   set interfaces st0 unit 1 family inet mtu 1460
   set interfaces st0 unit 1 family inet address PEER_BGP_IP_1
   set interfaces st0 unit 1 family inet6 address PEER_IPV6_NEXT_HOP_ADDRESS_1
   set interfaces st0 unit 2 family inet mtu 1460
   set interfaces st0 unit 2 family inet address PEER_BGP_IP_2
   set interfaces st0 unit 2 family inet6 address PEER_IPV6_NEXT_HOP_ADDRESS_2
   

   Replace the following values:

   • PEER_BGP_IP_1: the BGP IPv4 address of the peer for the first tunnel interface with its subnet mask
   • PEER_IPV6_NEXT_HOP_ADDRESS_1: the IPv6 next hop address of the peer for the first tunnel interface with its subnet mask
   • PEER_BGP_IP_2: the BGP IPv4 address of the peer for the second tunnel interface with its subnet mask
   • PEER_IPV6_NEXT_HOP_ADDRESS_2: the IPv6 next hop address of the peer for the second tunnel interface with its subnet mask

   For example:

   set interfaces st0 unit 1 family inet mtu 1460
   set interfaces st0 unit 1 family inet address 169.254.0.2/30
   set interfaces st0 unit 1 family inet6 address 2600:2d00:0:2::2/125
   set interfaces st0 unit 2 family inet mtu 1460
   set interfaces st0 unit 2 family inet address 169.254.1.2/30
   set interfaces st0 unit 2 family inet6 address 2600:2d00:0:2::1:2/125
   

2. Configure the IKE proposal, IKE policy, and IKE gateway objects.

   Note: IPv6 support in HA VPN requires IKE v2.

   # IKE proposal
   set security ike proposal ike_prop authentication-method pre-shared-keys
   set security ike proposal ike_prop dh-group group2
   set security ike proposal ike_prop authentication-algorithm sha-256
   set security ike proposal ike_prop encryption-algorithm aes-256-cbc
   set security ike proposal ike_prop lifetime-seconds 36000
   
   # IKE policy
   set security ike policy ike_pol mode main
   set security ike policy ike_pol proposals ike_prop
   set security ike policy ike_pol pre-shared-key ascii-text SHARED_SECRET
   
   # IKE gateway objects
   set security ike gateway gw1 ike-policy ike_pol
   set security ike gateway gw1 address HA_VPN_INTERFACE_ADDRESS_0
   set security ike gateway gw1 local-identity inet 142.215.100.60
   set security ike gateway gw1 external-interface ge-0/0/0
   set security ike gateway gw1 version v2-only
   set security ike gateway gw2 ike-policy ike_pol
   set security ike gateway gw2 address HA_VPN_INTERFACE_ADDRESS_1
   set security ike gateway gw2 local-identity inet 142.215.100.60
   set security ike gateway gw2 external-interface ge-0/0/0
   set security ike gateway gw2 version v2-only
   

   Replace the following values:

   • HA_VPN_INTERFACE_ADDRESS_0: the external IPv4 address of the first tunnel interface on the HA VPN gateway
   • HA_VPN_INTERFACE_ADDRESS_1: the external IPv4 address of the second tunnel interface on the HA VPN gateway
   • SHARED_SECRET: the pre-shared key you configured for the HA VPN tunnel

3. Configure IPsec proposal and IPsec policy. For example:

   set security ipsec proposal ipsec_prop protocol esp
   set security ipsec proposal ipsec_prop authentication-algorithm hmac-sha1-96
   set security ipsec proposal ipsec_prop encryption-algorithm aes-256-cbc
   set security ipsec proposal ipsec_prop lifetime-seconds 10800
   

4. Configure the IPsec VPN gateway configurations and bind them to the tunnel interfaces. For example:

   set security ipsec vpn vpn1 bind-interface st0.1
   set security ipsec vpn vpn1 ike gateway gw1
   set security ipsec vpn vpn1 ike ipsec-policy ipsec_pol
   set security ipsec vpn vpn1 establish-tunnels immediately
   set security ipsec vpn vpn2 bind-interface st0.2
   set security ipsec vpn vpn2 ike gateway gw2
   set security ipsec vpn vpn2 ike ipsec-policy ipsec_pol
   set security ipsec vpn vpn2 establish-tunnels immediately
   

5. Create the policy statements that change the next hop for IPv6 peers to the IPv6 next hop addresses.

   set policy-options policy-statement set-v6-next-hop-1 term 1 from family inet6
   set policy-options policy-statement set-v6-next-hop-1 term 1 then next-hop PEER_IPV6_NEXT_HOP_ADDRESS_1
   set policy-options policy-statement set-v6-next-hop-1 term 1 then accept
   set policy-options policy-statement set-v6-next-hop-2 term 1 from family inet6
   set policy-options policy-statement set-v6-next-hop-2 term 1 then next-hop PEER_IPV6_NEXT_HOP_ADDRESS_2
   set policy-options policy-statement set-v6-next-hop-2 term 1 then accept
   

   Replace the following values:

   • PEER_IPV6_NEXT_HOP_ADDRESS_1: the IPv6 next hop address of the BGP peer for the first tunnel
   • PEER_IPV6_NEXT_HOP_ADDRESS_2: the IPv6 next hop address of the BGP peer for the second tunnel

   For example:

   set policy-options policy-statement set-v6-next-hop-1 term 1 from family inet6
   set policy-options policy-statement set-v6-next-hop-1 term 1 then next-hop 2600:2d00:0:2::2
   set policy-options policy-statement set-v6-next-hop-1 term 1 then accept
   set policy-options policy-statement set-v6-next-hop-2 term 1 from family inet6
   set policy-options policy-statement set-v6-next-hop-2 term 1 then next-hop 2600:2d00:0:2::1:2
   set policy-options policy-statement set-v6-next-hop-2 term 1 then accept
   

6. Configure BGP for IPv6 route exchange.

   When configuring BGP, you must specify include-mp-next-hop statements to send the next hop attribute to the peer.

   Then you export the policy statement that you defined in the previous step to change the next hop to the IPv6 address.

   set protocols bgp group vpn family inet unicast
   set protocols bgp group vpn family inet6 unicast
   set protocols bgp group vpn peer-as ROUTER_ASN
   set protocols bgp group vpn neighbor ROUTER_BGP_IP_1 export set-v6-next-hop-1
   set protocols bgp group vpn neighbor ROUTER_BGP_IP_1 local-as PEER_ASN
   set protocols bgp group vpn neighbor ROUTER_BGP_IP_1 graceful-restart restart-time 120
   set protocols bgp group vpn neighbor ROUTER_BGP_IP_1 include-mp-next-hop
   set protocols bgp group vpn2 type external
   set protocols bgp group vpn2 local-address ROUTER_IP_2
   set protocols bgp group vpn2 family inet unicast
   set protocols bgp group vpn2 family inet6 unicast
   set protocols bgp group vpn2 peer-as ROUTER_ASN
   set protocols bgp group vpn2 neighbor ROUTER_BGP_IP_2 export set-v6-next-hop-2
   set protocols bgp group vpn2 neighbor ROUTER_BGP_IP_2 local-as PEER_ASN
   set protocols bgp group vpn2 neighbor ROUTER_BGP_IP_2 graceful-restart restart-time 120
   set protocols bgp group vpn2 neighbor ROUTER_BGP_IP_2 include-mp-next-hop
   

   Replace the following values:

   • ROUTER_BGP_IP_1: the IPv4 address assigned to the Cloud Router for the first tunnel
   • ROUTER_BGP_IP_2: the IPv4 address assigned to the Cloud Router for the second tunnel
   • ROUTER_ASN: the ASN assigned to the Cloud Router for your BGP sessions.
   • PEER_ASN: The ASN you assigned to the BGP peer, which is your Juniper JunOS device.

   The following example shows the include-mp-next-hop and export statements in bold text:

   set protocols bgp group vpn family inet unicast
   set protocols bgp group vpn family inet6 unicast
   set protocols bgp group vpn peer-as 16550
   set protocols bgp group vpn neighbor 169.254.0.1 export set-v6-next-hop-1
   set protocols bgp group vpn neighbor 169.254.0.1 local-as 65010
   set protocols bgp group vpn neighbor 169.254.0.1 graceful-restart restart-time 120
   set protocols bgp group vpn neighbor 169.254.0.1 include-mp-next-hop
   set protocols bgp group vpn2 type external
   set protocols bgp group vpn2 local-address 169.254.1.2
   set protocols bgp group vpn2 family inet unicast
   set protocols bgp group vpn2 family inet6 unicast
   set protocols bgp group vpn2 peer-as 16550
   set protocols bgp group vpn2 neighbor 169.254.1.1 export set-v6-next-hop-2
   set protocols bgp group vpn2 neighbor 169.254.1.1 local-as 65010
   set protocols bgp group vpn2 neighbor 169.254.1.1 graceful-restart restart-time 120
   set protocols bgp group vpn2 neighbor 169.254.1.1 include-mp-next-hop
   

7. Verify BGP connectivity.

   show route protocol bgp
   

Palo Alto Networks PAN-OS

This section describes how to set up your Palo Alto Networks PAN-OS device to support IPv4 and IPv6 traffic in your HA VPN tunnels.

PAN-OS supports the transport of IPv6 traffic over IPv4. However, PAN-OS does not support dual-stack address families. As a result, you must set up separate VPN tunnels that carry either IPv4 traffic or IPv6 traffic.

Note: The following instructions reflect PAN-OS 9.1.

For more information about configuring PAN-OS devices for use with VPN, see Palo Alto PAN OS VPN documentation.

Before you begin

In Google Cloud, set up two HA VPN gateways and four HA VPN tunnels. Two tunnels are for IPv6 traffic and two tunnels are for IPv4 traffic.

1. Create the HA VPN gateway and tunnels for IPv4 traffic. Create the following:

   • One HA VPN gateway that uses the IPv4-only stack type
   • Two VPN tunnels that can carry IPv4 traffic

2. Create the HA VPN gateway and tunnels for IPv6 traffic. Create the following:

   • One HA VPN gateway that uses the IPv4 and IPv6 (dual-stack) stack type
   • Two VPN tunnels that can carry IPv6 traffic
   • Enable IPv6 in the BGP sessions for the IPv6 tunnels

3. Record the external IPv4 addresses that Google Cloud assigns to each HA VPN gateway interface.

4. Record the following configuration values for each tunnel:

   • The link-local IPv4 address of the BGP peer, which is the PAN-OS side of the BGP session
   • The link-local IPv4 address of the Cloud Router used for BGP peering
   • The ASN you assigned to the BGP peer, which is your PAN-OS device
   • The ASN you assigned to the Cloud Router for your BGP sessions
   • The pre-shared key

5. For each IPv6 tunnel, also record the peerIpv6NexthopAddress, which is the IPv6 next hop address assigned to the BGP peer. Google Cloud might have automatically assigned this address for you, or you might have manually specified the addresses when you created the VPN tunnel.

To find the details for your BGP session configuration, see View BGP session configuration.

Configure PAN-OS

To configure your Palo Alto Networks device, perform the following steps in the PAN-OS Web Interface.

1. Enable IPv6 firewalling.

   1. Select Device > Setup > Session Settings.
   2. Select Enable IPv6 firewalling.

2. Create a loopback interface for IPv4 and IPv6.

   1. Select Network > Interfaces > Loopback interface and create a new loopback interface.
   2. Create a loopback interface. For example, loopback.10.
   3. On the Config tab, set Virtual Router to external and set Security Zone to ZONE_EXTERNAL.
   4. On the IPv4 tab, assign the loopback interface with IPv4 address ranges that are appropriate for your on-premises network.
   5. On the IPv6 tab, select Enable IPv6 on the interface, and add an IPv6 address range appropriate for your on-premises network.
   6. On the Advanced tab, specify a Management Profile for the loopback interface. Make sure that the profile that you specify allows ping so you can verify connectivity.

3. Create four IKE gateway tunnels, two tunnels for IPv6 traffic and two tunnels for IPv4 traffic. Each tunnel connects to an interface on a HA VPN gateway.

   • Create two tunnels for IPv6 traffic.
     1. Select Network > Interfaces > Tunnel and create a new tunnel.
     2. Specify a name for the first tunnel. For example, tunnel.1.
     3. On the Config tab, set Virtual Router to external and set Security Zone to ZONE_EXTERNAL.
     4. On the IPv4 tab, specify the link-local address of the BGP peer that you set up when creating the VPN tunnels for the HA VPN. For example, 169.254.0.2/30.
     5. On the IPv6 tab, select Enable IPv6 on the interface, and specify the IPv6 next hop address configured for the BGP peer. For example, 2600:2D00:0:2::2/125.
     6. On the Advanced tab, set MTU to 1460.
     7. Repeat this procedure for the second tunnel. For example, tunnel.2. On the IPv4 and IPv6 tabs, specify appropriate values for the BGP peer and IPv6 next hop fields. Use the values that match the second tunnel of the dual-stack HA VPN. For example, 169.254.1.2/30 and 2600:2D00:0:3::3/125.
   • Create two tunnels for IPv4 traffic.
     1. Select Network > Interfaces > Tunnel and create a new tunnel.
     2. Specify a name for the third tunnel. For example, tunnel.3.
     3. On the Config tab, set Virtual Router to external and set Security Zone to ZONE_EXTERNAL.
     4. On the IPv4 tab, specify the link-local address of the BGP peer that you set up when creating the VPN tunnels for the HA VPN. For example, 169.254.2.2/30.
     5. Skip the IPv6 tab configuration.
     6. On the Advanced tab, set MTU to 1460.
     7. Repeat this procedure for the fourth tunnel. For example, tunnel.4. On the IPv4 tab, specify appropriate values for the BGP peer that match the second tunnel of the IPv4-only HA VPN. For example, 169.254.3.2/30.

4. Create an IPsec crypto profile.

   1. Select Network > IPSec Crypto and create a new profile.
   2. Enter values for the following fields:
      • Name: Enter a profile name. For example, ha-vpn.
      • IPSec Protocol: Select ESP.
      • Encryption: Add a supported IKE cipher.
      • Authentication: Specify a hash function. For example, sha512.
      • DH group: Select a DH group. For example, group14.
      • Lifetime: Select Hours and enter 3.
   3. Click OK.

5. Create an IKE crypto profile.

   1. Select Network > IKE Crypto.
   2. Enter values for the following fields:
      • Name: Enter a profile name. For example, ha-vpn.
      • DH group: Verify that the DH group that you selected for the IPSec Crypto profile appears in the list.
      • Authentication: Specify a hash function. For example, sha512.
      • Encryption: Add a supported IKE cipher.
   3. In the Timers pane, select Hours for Key Lifetime and enter 10.
   4. Click OK.

6. After you create four IKE tunnels, create four IKE gateways, one for each tunnel.

   1. Select Network > IKE Gateways, and create a new gateway.
   2. On the General tab, enter values for the following fields:
      • Name: Name of the IKE gateway for the first tunnel. For example, havpn-v6-tunnel1.
      • Version: Select IKEv2 only mode.
      • Address type: Select IPv4.
      • Interface: Specify the loopback interface that you created at the beginning of this procedure. For example, loopback.10.
      • Local IP Address: Specify an IPv4 address range appropriate for your on-premises network.
      • Peer IP Address Type: Select IP.
      • Peer Address: Specify the external IPv4 address of the first HA VPN interface for the tunnel.
      • Authentication: Select Pre-Shared Key.
      • Pre-shared Key, Confirm Pre-Shared Key: Enter the shared secret you configured in Google Cloud for the tunnel.
      • Local Identification: Select IP address, and specify an IPv4 address appropriate for your on-premises network.
      • Peer Identification: Select IP address, and the external IPv4 address of the HA VPN interface for the tunnel.
   3. Select the Advanced Options tab.
   4. For the IKE Crypto Profile, select the profile that you created previously. For example, ha-vpn.
   5. Enable Liveness Check and enter 5 for the Interval (sec).
   6. Click OK.
   7. Repeat this procedure for the other three tunnels, but substitute appropriate values for the following fields:
      • Name: Name of the IKE gateway for the tunnel. For example, havpn-v6-tunnel2, havpn-v4-tunnel1, or havpn-v4-tunnel2.
      • Local IP Address / Local Identification: Specify an unused IPv4 address appropriate for your on-premises network.
      • Peer Address / Peer Identification: Specify the external IPv4 address for the matching HA VPN interface of the tunnel.
      • Pre-shared Key: Specify the shared secret configured for the tunnel.

7. Create four IPsec tunnels.

   1. Select Network > IPSec Tunnels and create a new tunnel.
   2. Enter values for the following fields:
      • Name: Unique name for the tunnel. For example, hapvpn-tunnel-1.
      • Tunnel Interface: Select a tunnel interface for the IKE gateway tunnel that you created earlier. For example, tunnel.1.
      • Type: Select Auto Key.
      • Address Type: Select IPv4.
      • IKE Gateway: Select one of the IKE Gateways that you created earlier. For example, havpn-v6-tunnel.
      • IPSec Crypto Profile: Select the profile that you created earlier. For example, ha-vpn.
   3. Don't configure Proxy IDs.
   4. Click OK.
   5. Repeat this procedure for the other three tunnels, but substitute appropriate values for the following fields:
      • Name: Unique name for the IPsec tunnel. For example, havpn-tunnel2, havpn-tunnel3, or havpn-tunnel4.
      • Tunnel Interface: Select an unused tunnel interface for the IKE gateway tunnel that you created earlier. For example, tunnel.2, tunnel.3 or tunnel.4.
      • IKE Gateway: Select one of the IKE Gateways that you created earlier. For example, havpn-v6-tunnel2, havpn-v4-tunnel1, or havpn-v4-tunnel2.

8. (Optional) Configure ECMP.

   1. Select Network > Virtual Routers > ROUTER_NAME > Router Settings > ECMP.
   2. On the ECMP tab, select Enable.
   3. Click OK.

9. Configure BGP.

   1. Select Network > Virtual Routers > ROUTER_NAME > Router Settings > BGP.
   2. On the General tab, select Enable.
   3. On the Router ID field, enter the link-local IPv4 address assigned to the BGP peer, which is the PAN-OS side of the BGP session. peer.
   4. In the AS Number field, enter the ASN for the PAN-OS side of the BGP session.
   5. For Options, make sure Install Route is selected.
   6. Click OK.

10. Create a BGP peer group with one BGP peer for each IPv6 tunnel. You create a separate BGP peer group for each IPv6 tunnel so you can configure a different IPv6 next hop address per tunnel.

    1. Select Network > Virtual Routers > ROUTER_NAME > Router Settings > BGP > Peer Group.
    2. On the Peer Group tab, create a new peer group for the first IPv6 tunnel.
    3. In the Name field, enter a name for the peer group. For example, havpn-bgp-v6-tunnel1.
    4. Select Enable.
    5. Select Aggregated Confed AS Path.
    6. In the Type list, select EBGP.
    7. For Import Next Hop, select Original.
    8. For Export Next Hop, select Resolve.
    9. Select Remove Private AS.
    10. In the Peer pane, click Add to add a peer to the BGP peer group.
    11. In the Peer dialog, enter the following values:
        • Name: Name for the peer. For example, havpn-v6-tunnel1.
        • Select Enable.
        • Peer AS: The ASN assigned to the Cloud Router for the BGP session.
        • On the Addressing tab, configure the following options:
          • Select Enable MP-BGP Extensions.
          • For Address Family Type, select IPv6.
          • In Local Address, for Interface select the first tunnel that you defined when creating the IKE gateway tunnels. For example, tunnel.1.
          • For IP, select the link-local IPv4 address of the BGP peer. For example, 169.254.0.2./30.
          • In Peer Address, for Type select IP.
          • For Address, select the link-local IPv4 address of the Cloud Router for this BGP session. For example, 169.254.0.1.
        • Click OK.
    12. After you finish adding the peer, click OK.
    13. Repeat this procedure for the other IPv6 tunnel, but substitute appropriate values for the following fields:
        • Name: Unique name for the BGP peer group. For example, havpn-bgp-v6-tunnel2.
        • In the Peer dialog, enter appropriate values for the tunnel in the following fields:
          • Name: Name for the peer. For example, havpn-v6-tunnel1.
          • In Local Address, for Interface select the second tunnel that you defined when creating the IKE gateway tunnels. For example, tunnel.2.
          • For IP, select the link-local IPv4 address of the BGP peer for the second tunnel. For example, 169.254.1.2./30.
          • In Peer Address, for Address, select the link-local IPv4 address of the Cloud Router for this BGP session. For example, 169.254.1.1.

11. Create a BGP peer group for the IPv4 tunnels.

    1. Select Network > Virtual Routers > ROUTER_NAME > Router Settings > BGP > Peer Group.
    2. On the Peer Group tab, create a new peer group for the IPv4 tunnel.
    3. In the Name field, enter a name for the peer group. For example, havpn-bgp-v4.
    4. Select Enable.
    5. Select Aggregated Confed AS Path.
    6. In the Type list, select EBGP.
    7. For Import Next Hop, select Original.
    8. For Export Next Hop, select Resolve.
    9. Select Remove Private AS.
    10. In the Peer pane, click Add to add a peer to the BGP peer group.
    11. In the Peer dialog, enter the following values:
        • Name: Enter a name for the peer. For example, havpn-v4-tunnel1.
        • Select Enable.
        • Peer AS: The ASN assigned to the Cloud Router for the BGP session.
        • On the Addressing tab, configure the following options:
          • Don't select Enable MP-BGP Extensions.
          • For Address Family Type, select IPv4.
          • In Local Address, for Interface select the third tunnel that you defined when creating the IKE gateway tunnels. For example, tunnel.3.
          • For IP, select the link-local IPv4 address of the BGP peer. For example, 169.254.2.2./30.
          • In Peer Address, select IP for Type.
          • For Address, select the link-local IPv4 address of the Cloud Router for this BGP session. For example, 169.254.2.1.
        • Click OK.
    12. In the Peer pane, click Add to add the second peer to the BGP peer group.
    13. In the Peer dialog, enter the following values:
        • Name: Enter a name for the peer. For example, havpn-v4-tunnel2.
        • Select Enable.
        • Peer AS: The ASN assigned to the Cloud Router for the BGP session.
        • On the Addressing tab, configure the following options:
          • Don't select Enable MP-BGP Extensions.
          • For Address Family Type, select IPv4.
          • In Local Address, for Interface select the fourth tunnel that you defined when creating the IKE gateway tunnels. For example, tunnel.4.
          • For IP, select the link-local IPv4 address of the BGP peer. For example, 169.254.3.2./30.
          • In Peer Address, for Type select IP.
          • For Address, select the link-local IPv4 address of the Cloud Router for this BGP session. For example, 169.254.3.1.
    14. Click OK.
    15. After you finish adding both peers, click OK.

12. Export BGP configuration rules to the BGP peer groups for the IPv6 tunnels. This step lets you assign different IPv6 next hop addresses to the tunnels.

    1. Select Network > Virtual Routers > ROUTER_NAME > Router Settings > BGP > Export.
    2. In the Export Rule dialog, enter a name in the Rules field. For example, havpn-tunnel1-v6.
    3. Select Enable.
    4. In the Used By pane, click Add to add the BGP peer group you created for the first IPv6 tunnel. For example, havpn-bgp-v6-tunnel1.
    5. On the Match tab, select Unicast in the Route Table list.
    6. In Address Prefix, add the address prefix for the IPv6 addresses used in your on-premises network.
    7. On the Action tab, configure the following options:
       • In the Action list, select Allow.
       • In the Next Hop, enter the IPv6 next hop address assigned to the BGP peer when you created the tunnel. For example, 2600:2D00:0:2::2.
    8. Click OK.
    9. Repeat this procedure for the BGP peer group used by the second IPv6 tunnel, but substitute appropriate values for the following fields:
       • In the Export Rule dialog, enter a unique name in the Rules field. For example, havpn-tunnel2-v6.
       • In the Used By pane, click Add to add the BGP peer group you created for the second IPv6 tunnel. For example, havpn-bgp-v6-tunnel1.
    10. On the Action tab, configure the Next Hop field, enter the IPv6 next hop address assigned to the BGP peer for this tunnel. For example, 2600:2D00:0:3::3.