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There are various L3 encapsulation standards using UDP being discussed to leverage the UDP based load balancing capability of different networks. MPLSoUDP (__ https://tools.ietf.org/html/rfc7510) is one among them. The Bareudp tunnel provides a generic L3 encapsulation support for tunnelling different L3 protocols like MPLS, IP, NSH etc. inside a UDP tunnel. An example to create bareudp device to tunnel MPLS traffic is given $ ovs-vsctl add-port br_mpls udp_port -- set interface udp_port \ type=bareudp options:remote_ip=2.1.1.3 options:local_ip=2.1.1.2 \ options:payload_type=0x8847 options:dst_port=6635 The bareudp device supports special handling for MPLS & IP as they can have multiple ethertypes. MPLS procotcol can have ethertypes ETH_P_MPLS_UC (unicast) & ETH_P_MPLS_MC (multicast). IP protocol can have ethertypes ETH_P_IP (v4) & ETH_P_IPV6 (v6). The bareudp device to tunnel L3 traffic with multiple ethertypes (MPLS & IP) can be created by passing the L3 protocol name as string in the field payload_type. An example to create bareudp device to tunnel MPLS unicast & multicast traffic is given below.:: $ ovs-vsctl add-port br_mpls udp_port -- set interface udp_port \ type=bareudp options:remote_ip=2.1.1.3 options:local_ip=2.1.1.2 \ options:payload_type=mpls options:dst_port=6635 Signed-off-by: Martin Varghese <martin.varghese@nokia.com> Acked-By: Greg Rose <gvrose8192@gmail.com> Tested-by: Greg Rose <gvrose8192@gmail.com> Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>