+| | | Vpp Route Add | ${dut1} | ${net} | ${prefix} | ${dut2_if_addr}
+| | | ... | ${dut1_if}
+
+| Initialize IPv6 forwarding in circular topology
+| | [Documentation]
+| | ... | Set UP state on VPP interfaces in path on nodes in 2-node / 3-node
+| | ... | circular topology. Get the interface MAC addresses and setup ARP on
+| | ... | all VPP interfaces. Setup IPv6 addresses with /64 prefix on DUT-TG
+| | ... | links. In case of 3-node topology setup IPv6 adresses with /96 prefix
+| | ... | on DUT1-DUT2 link and set routing on both DUT nodes with prefix /64
+| | ... | and next hop of neighbour DUT interface IPv6 address. Configure route
+| | ... | entries for remote hosts IPv6 addresses if required.
+| | ...
+| | ... | *Arguments:*
+| | ... | - tg_if1_ip6 - IPv6 address of TG interface1. Type: string
+| | ... | - tg_if2_ip6 - IPv6 address of TG interface2. Type: string
+| | ... | - dut1_if1_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - dut1_if2_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - dut2_if1_ip6 - IPv6 address of DUT2 interface1 (Optional).
+| | ... | Type: string
+| | ... | - dut2_if2_ip6 - IPv6 address of DUT2 interface2 (Optional).
+| | ... | Type: string
+| | ... | - remote_host1_ip6 - IPv6 address of remote host1 (Optional).
+| | ... | Type: string
+| | ... | - remote_host2_ip6 - IPv6 address of remote host2 (Optional).
+| | ... | Type: string
+| | ... | - remote_host_ip6_prefix - IPv6 address prefix for host IPv6 addresses
+| | ... | (Optional). Type: string or integer
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2001:2::1 \|
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2001:2::1 \
+| | ... | \| remote_host1_ip6=3ffe:5f::1 \| remote_host2_ip6=3ffe:5f::2 \
+| | ... | \| remote_host_ip6_prefix=128 \|
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2003:3::1 \| 2003:3::2 \
+| | ... | \| 2001:2::1 \|
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2003:3::1 \| 2003:3::2 \
+| | ... | \| 2001:2::1 \| remote_host1_ip4=3ffe:5f::1 \
+| | ... | \| remote_host2_ip4=3ffe:5f::2 \| remote_host_ip4_prefix=128 \|
+| | ...
+| | [Arguments] | ${tg_if1_ip6} | ${tg_if2_ip6} | ${dut1_if1_ip6}
+| | ... | ${dut1_if2_ip6} | ${dut2_if1_ip6}=${NONE} | ${dut2_if2_ip6}=${NONE}
+| | ... | ${remote_host1_ip6}=${NONE} | ${remote_host2_ip6}=${NONE}
+| | ... | ${remote_host_ip6_prefix}=${NONE}
+| | ...
+| | ...
+| | Set interfaces in path up
+| | ...
+| | ${dut2_status} | ${value}= | Run Keyword And Ignore Error
+| | ... | Variable Should Exist | ${dut2_node}
+| | ...
+| | Run Keyword If | '${dut2_status}' == 'PASS'
+| | ... | Initialize IPv6 forwarding in 3-node circular topology
+| | ... | ${tg_if1_ip6} | ${tg_if2_ip6} | ${dut1_if1_ip6} | ${dut1_if2_ip6}
+| | ... | ${dut2_if1_ip6} | ${dut2_if2_ip6} | ${remote_host1_ip6}
+| | ... | ${remote_host2_ip6} | ${remote_host_ip6_prefix}
+| | ... | ELSE
+| | ... | Initialize IPv6 forwarding in 2-node circular topology
+| | ... | ${tg_if1_ip6} | ${tg_if2_ip6} | ${dut1_if1_ip6} | ${dut1_if2_ip6}
+| | ... | remote_host1_ip6=${remote_host1_ip6}
+| | ... | remote_host2_ip6=${remote_host2_ip6}
+| | ... | remote_host_ip6_prefix=${remote_host_ip6_prefix}
+
+| Initialize IPv6 forwarding in 2-node circular topology
+| | [Documentation]
+| | ... | Set UP state on VPP interfaces on DUT node in 2-node circular
+| | ... | topology. Get the interface MAC addresses and setup ARP on
+| | ... | all VPP interfaces. Setup IPv6 addresses with /64 prefix on DUT-TG
+| | ... | links. Configure route entries for remote hosts IPv6 addresses
+| | ... | if required.
+| | ...
+| | ... | *Arguments:*
+| | ... | - tg_if1_ip6 - IPv6 address of TG interface1. Type: string
+| | ... | - tg_if2_ip6 - IPv6 address of TG interface2. Type: string
+| | ... | - dut1_if1_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - dut1_if2_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - remote_host1_ip6 - IPv6 address of remote host1 (Optional).
+| | ... | Type: string
+| | ... | - remote_host2_ip6 - IPv6 address of remote host2 (Optional).
+| | ... | Type: string
+| | ... | - remote_host_ip6_prefix - IPv6 address prefix for host IPv6 addresses
+| | ... | (Optional). Type: string or integer
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2001:2::1 \|
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2001:2::1 \
+| | ... | \| remote_host1_ip6=3ffe:5f::1 \| remote_host2_ip6=3ffe:5f::2 \
+| | ... | \| remote_host_ip6_prefix=128 \|
+| | ...
+| | [Arguments] | ${tg_if1_ip6} | ${tg_if2_ip6} | ${dut1_if1_ip6}
+| | ... | ${dut1_if2_ip6} | ${remote_host1_ip6}=${NONE}
+| | ... | ${remote_host2_ip6}=${NONE} | ${remote_host_ip6_prefix}=${NONE}
+| | ...
+| | ${dut_tg_ip6_prefix}= | Set Variable | 64
+| | ...
+| | Add IP neighbor | ${dut_node} | ${dut_to_tg_if1} | ${tg_if1_ip6}
+| | ... | ${tg_to_dut_if1_mac}
+| | Add IP neighbor | ${dut_node} | ${dut_to_tg_if2} | ${tg_if2_ip6}
+| | ... | ${tg_to_dut_if2_mac}
+| | ...
+| | VPP set If IPv6 addr | ${dut_node} | ${dut_to_tg_if1} | ${dut1_if1_ip6}
+| | ... | ${dut_tg_ip6_prefix}
+| | VPP set If IPv6 addr | ${dut_node} | ${dut_to_tg_if2} | ${dut1_if2_ip6}
+| | ... | ${dut_tg_ip6_prefix}
+| | ...
+| | Run Keyword Unless | '${remote_host1_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut_node} | ${remote_host1_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${tg_if1_ip6} | ${dut_to_tg_if1}
+| | Run Keyword Unless | '${remote_host2_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut_node} | ${remote_host2_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${tg_if2_ip6} | ${dut_to_tg_if2}
+
+| Initialize IPv6 forwarding in 3-node circular topology
+| | [Documentation]
+| | ... | Set UP state on VPP interfaces in path on nodes in 3-node circular
+| | ... | topology. Get the interface MAC addresses and setup ARP on all VPP
+| | ... | interfaces. Setup IPv6 addresses with /64 prefix on DUT-TG links.
+| | ... | Configure IPv6 adresses with /96 prefix on DUT1-DUT2 link and set
+| | ... | routing on both DUT nodes with prefix /64 and next hop of neighbour
+| | ... | DUT interface IPv6 address. Configure route entries for remote hosts
+| | ... | IPv6 addresses if required.
+| | ...
+| | ... | *Arguments:*
+| | ... | - tg_if1_ip6 - IPv6 address of TG interface1. Type: string
+| | ... | - tg_if2_ip6 - IPv6 address of TG interface2. Type: string
+| | ... | - dut1_if1_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - dut1_if2_ip6 - IPv6 address of DUT1 interface1. Type: string
+| | ... | - dut2_if1_ip6 - IPv6 address of DUT2 interface1 Type: string
+| | ... | - dut2_if2_ip6 - IPv6 address of DUT2 interface2 Type: string
+| | ... | - remote_host1_ip6 - IPv6 address of remote host1 (Optional).
+| | ... | Type: string
+| | ... | - remote_host2_ip6 - IPv6 address of remote host2 (Optional).
+| | ... | Type: string
+| | ... | - remote_host_ip6_prefix - IPv6 address prefix for host IPv6 addresses
+| | ... | (Optional). Type: string or integer
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2003:3::1 \| 2003:3::2 \
+| | ... | \| 2001:2::1 \|
+| | ... | \| Initialize IPv6 forwarding in circular topology \
+| | ... | \| 2001:1::2 \| 2001:2::2 \| 2001:1::1 \| 2003:3::1 \| 2003:3::2 \
+| | ... | \| 2001:2::1 \| remote_host1_ip4=3ffe:5f::1 \
+| | ... | \| remote_host2_ip4=3ffe:5f::2 \| remote_host_ip4_prefix=128 \|
+| | ...
+| | [Arguments] | ${tg_if1_ip6} | ${tg_if2_ip6} | ${dut1_if1_ip6}
+| | ... | ${dut1_if2_ip6} | ${dut2_if1_ip6} | ${dut2_if2_ip6}
+| | ... | ${remote_host1_ip6}=${NONE} | ${remote_host2_ip6}=${NONE}
+| | ... | ${remote_host_ip6_prefix}=${NONE}
+| | ...
+| | ${dut_tg_ip6_prefix}= | Set Variable | 64
+| | ${dut_link_ip6_prefix}= | Set Variable | 96
+| | ...
+| | Add IP neighbor | ${dut1_node} | ${dut1_to_tg} | ${tg_if1_ip6}
+| | ... | ${tg_to_dut1_mac}
+| | Add IP neighbor | ${dut1_node} | ${dut1_to_dut2} | ${dut2_if1_ip6}
+| | ... | ${dut2_to_dut1_mac}
+| | Add IP neighbor | ${dut2_node} | ${dut2_to_dut1} | ${dut1_if2_ip6}
+| | ... | ${dut1_to_dut2_mac}
+| | Add IP neighbor | ${dut2_node} | ${dut2_to_tg} | ${tg_if2_ip6}
+| | ... | ${tg_to_dut2_mac}
+| | ...
+| | VPP set If IPv6 addr | ${dut1_node} | ${dut1_to_tg} | ${dut1_if1_ip6}
+| | ... | ${dut_tg_ip6_prefix}
+| | VPP set If IPv6 addr | ${dut1_node} | ${dut1_to_dut2} | ${dut1_if2_ip6}
+| | ... | ${dut_link_ip6_prefix}
+| | VPP set If IPv6 addr | ${dut2_node} | ${dut2_to_dut1} | ${dut2_if1_ip6}
+| | ... | ${dut_link_ip6_prefix}
+| | VPP set If IPv6 addr | ${dut2_node} | ${dut2_to_tg} | ${dut2_if2_ip6}
+| | ... | ${dut_tg_ip6_prefix}
+| | ...
+| | Vpp Route Add | ${dut1_node} | ${tg_if2_ip6} | ${dut_tg_ip6_prefix}
+| | ... | ${dut2_if1_ip6} | ${dut1_to_dut2}
+| | Vpp Route Add | ${dut2_node} | ${tg_if1_ip6} | ${dut_tg_ip6_prefix}
+| | ... | ${dut1_if2_ip6} | ${dut2_to_dut1}
+| | ...
+| | Run Keyword Unless | '${remote_host1_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut1_node} | ${remote_host1_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${tg_if1_ip6} | ${dut1_to_tg}
+| | Run Keyword Unless | '${remote_host2_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut1_node} | ${remote_host2_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${dut2_if1_ip6} | ${dut1_to_dut2}
+| | Run Keyword Unless | '${remote_host1_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut2_node} | ${remote_host1_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${dut1_if2_ip6} | ${dut2_to_dut1}
+| | Run Keyword Unless | '${remote_host2_ip6}' == '${NONE}'
+| | ... | Vpp Route Add | ${dut2_node} | ${remote_host2_ip6}
+| | ... | ${remote_host_ip6_prefix} | ${tg_if2_ip6} | ${dut2_to_tg}