Hi,

I want to forward multicast traffic with vpp, but after following commands,
the multicast packet drop with ip4-drop.

ip mroute add 224.0.0.5 via GigabitEthernet0/7/0 Forward
ip mroute add 224.0.0.5 via GigabitEthernet0/8/0 Forward


The sample trace is:

00:27:52:305546: dpdk-input
  GigabitEthernet0/7/0 rx queue 0
  buffer 0x3492: current data 14, length 64, free-list 0, clone-count 0,
totlen-nifb 0, trace 0x2
  PKT MBUF: port 0, nb_segs 1, pkt_len 78
    buf_len 2176, data_len 78, ol_flags 0x0, data_off 128, phys_addr
0x7c3d24c0
    packet_type 0x0
  IP4: 52:54:00:42:80:c8 -> 01:00:5e:00:00:05
  OSPF: 192.168.20.151 -> 224.0.0.5
    tos 0xc0, ttl 1, length 64, checksum 0x6bc3
    fragment id 0x979d
00:27:52:305566: ip4-input
  OSPF: 192.168.20.151 -> 224.0.0.5
    tos 0xc0, ttl 1, length 64, checksum 0x6bc3
    fragment id 0x979d
00:27:52:305570: ip4-mfib-forward-lookup
  fib 0 entry 6
00:27:52:305572: ip4-mfib-forward-rpf
  entry 6 1 Forward,
00:27:52:305572: ip4-drop
    OSPF: 192.168.20.151 -> 224.0.0.5
      tos 0xc0, ttl 1, length 64, checksum 0x6bc3
      fragment id 0x979d
00:27:52:305574: error-drop
  ip4-input: ip4 adjacency drop


Best Regards,
Juan Salmon.
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