NFD

UDP multicast face for an NIC should send packets on the chosen NIC only, instead of onto all NICs.

Topology

 /----\
A      B
 \----/

• Each host has two NICs.
• A/eth0 and B/eth0 are on one VLAN.
• A/eth1 and B/eth1 are on another VLAN.

Steps to reproduce:

1. Start NFD on A and B.
2. Execute nfd-status -f on A, find out the FaceId of UDP multicast faces.
3. Invoke nfdc add-nexthop /Z $faceid on A, where $faceid is the FaceId for the UDP multicast face on eth1.
4. Start ndnpingserver /Z on B.
5. Execute ndnping -c 30 /Z on A.
6. Invoke nfd-status -f on A and B.

Expected:

• On host A, UDP multicast face on eth0 has 0 incoming Interests, 0 incoming Datas, 0 outgoing Interests, 0 outgoing Datas.
• On host A, UDP multicast face on eth1 has 0 incoming Interests, 30 incoming Datas, 30 outgoing Interests, 0 outgoing Datas.
• On host B, UDP multicast face on eth0 has 0 incoming Interests, 0 incoming Datas, 0 outgoing Interests, 0 outgoing Datas.
• On host B, UDP multicast face on eth1 has 30 incoming Interests, 0 incoming Datas, 0 outgoing Interests, 30 outgoing Datas.

Actual:

• On host A, UDP multicast face on eth0 has 0 incoming Interests, 30 incoming Datas, 0 outgoing Interests, 0 outgoing Datas.
• On host A, UDP multicast face on eth1 has 0 incoming Interests, 30 incoming Datas, 30 outgoing Interests, 0 outgoing Datas.
• On host B, UDP multicast face on eth0 has 30 incoming Interests, 0 incoming Datas, 0 outgoing Interests, 0 outgoing Datas.
• On host B, UDP multicast face on eth1 has 30 incoming Interests, 0 incoming Datas, 0 outgoing Interests, 30 outgoing Datas.