-| ... | *[Top] Network Topologies:* TG-DUT1-TG 2-node circular topology with\
-| ... | single links between nodes.
-| ... | *[Enc] Packet Encapsulations:* Eth-IPv4 for IPv4 routing. IEEE 802.1Q\
-| ... | tagging is applied on links between TG-DUT1.
-| ... | *[Cfg] DUT configuration:* DUT1 is configured with IPv4 routing and\
-| ... | two static IPv4 /30 route entries. DUT1 is tested with ${nic_name}.
-| ... | *[Ver] TG verification:* Test IPv4 packets are sent in one direction \
-| ... | by TG on link to DUT1; on receive TG verifies packets for correctness \
-| ... | and drops as applicable.
-| ... | *[Ref] Applicable standard specifications:* IEEE 802.1q.
+| ... | *[Top] Network Topologies:* TG-DUT1-TG 2-node circular topology \
+| ... | with single links between nodes.
+| ... | *[Enc] Packet Encapsulations:* Eth-IPv4 for L2 switching of IPv4.\
+| ... | Both apply to all links.
+| ... | *[Cfg] DUT configuration:* DUT1 is configured with L2 bridge-domain \
+| ... | switching.
+| ... | *[Ver] TG verification:* Test IPv4 packets with IP protocol=61 \
+| ... | are sent in both directions by TG on links to DUT1; on receive TG \
+| ... | verifies packets for correctness and their IPv4 src-addr, \
+| ... | dst-addr and MAC addresses.
+| ... | *[Ref] Applicable standard specifications:* RFC792