in our application I have to send out multicast packets, but the packet is getting dropped in vpp
The error message says *memif81/0-output: interface is down* but I am forwarding the packet through some other interface "HundredGigabitEthernet12/0/0.501", could you please help me understand why its trying to go out on memif and not using HundredGigabitEthernet12/0/0.501? Thanks in advance for the help! *This is the rules added to send packet out* ip mroute add ff38:23:2001:5b0:2000::8000/128 via tuntap-0 Accept ip mroute add ff38:23:2001:5b0:2000::8000/128 via HundredGigabitEthernet12/0/0.501 Forward 02:39:27:201439: ip6-input UDP: 2001:5b0:ffff:501:b883:31f:39e:7890 -> ff38:23:2001:5b0:2000::8000 tos 0x00, flow label 0xaf8f3, hop limit 2, payload length 26 UDP: 8000 -> 8000 length 26, checksum 0x3e97 02:39:27:201439: ip6-mfib-forward-lookup fib 0 entry 9 02:39:27:201439: ip6-mfib-forward-rpf entry 9 itf 1 flags Accept, 02:39:27:201439: ip6-replicate replicate: 7 via [@2]: ipv4-mcast: HundredGigabitEthernet12/0/0.501: mtu:9000 next:11 01005e000000b883039e7890810001f586dd replicate: 7 via [@1]: dpo-receive 02:39:27:201439: ip6-rewrite-mcast tx_sw_if_index 6 adj-idx 54 : ipv4-mcast: HundredGigabitEthernet12/0/0.501: mtu:9000 next:11 01005e000000b883039e7890810001f586dd flow hash: 0x00000000 00000000: 01005e008000b883039e7890810001f586dd600af8f3001a1101200105b0ffff 00000020: 0501b883031f039e7890ff380023200105b020000000000080001f401f40001a 00000040: 3e97010102000204000342af5fd3b3870000000000210001005c000307d00000 00000060: 00000000000000000000000000000000000000000000000000000000 02:39:27:201440: ip6-local UDP: 2001:5b0:ffff:501:b883:31f:39e:7890 -> ff38:23:2001:5b0:2000::8000 tos 0x00, flow label 0xaf8f3, hop limit 2, payload length 26 UDP: 8000 -> 8000 length 26, checksum 0x3e97 02:39:27:201440: memif81/0-output HundredGigabitEthernet12/0/0.501 00000000: 01005e008000b883039e7890810001f586dd600af8f3001a1101200105b0ffff 00000020: 0501b883031f039e7890ff380023200105b020000000000080001f401f40001a 00000040: 3e97010102000204000342af5fd3b3870000000000210001005c000307d00000 00000060: 000000000000000000000000000000000000000000000000 02:39:27:201440: ip6-drop UDP: 2001:5b0:ffff:501:b883:31f:39e:7890 -> ff38:23:2001:5b0:2000::8000 tos 0x00, flow label 0xaf8f3, hop limit 2, payload length 26 UDP: 8000 -> 8000 length 26, checksum 0x3e97 02:39:27:201440: error-drop rx:tuntap-0 rx:tuntap-0 02:39:27:201441: drop *memif81/0-output: interface is down* ip6-input: valid ip6 packets vpp# sh int addr HundredGigabitEthernet12/0/0 (up): HundredGigabitEthernet12/0/0.501 (up): L3 2001:5b0:ffff:501:b883:31f:19e:7890/64 L3 2001:5b0:ffff:501:b883:31f:29e:7890/64 L3 2001:5b0:ffff:501:b883:31f:39e:7890/64 HundredGigabitEthernet12/0/0.1100 (up): L3 192.168.115.11/24 L3 192.168.115.12/24 L3 2001:5b0:ffff:1100::11/64 L3 2001:5b0:ffff:1100::12/64 HundredGigabitEthernet12/0/0.1103 (up): L3 192.168.118.11/24 L3 192.168.118.12/24 L3 2001:5b0:ffff:1103::11/64 L3 2001:5b0:ffff:1103::12/64 HundredGigabitEthernet12/0/1 (dn): HundredGigabitEthernetd8/0/0 (dn): HundredGigabitEthernetd8/0/1 (dn): local0 (dn): memif1/0 (up): L3 192.168.1.3/24 memif11/0 (up): L3 192.168.11.3/24 L3 fd11::11/64 memif2/0 (up): L3 192.168.2.3/24 memif21/0 (up): L3 192.168.21.3/24 L3 fd21::21/64 memif3/0 (up): L3 192.168.3.3/24 memif31/0 (up): L3 192.168.31.3/24 L3 fd31::31/64 memif4/0 (up): L3 192.168.4.3/24 memif41/0 (up): L3 192.168.41.3/24 L3 fd41::41/64 memif5/0 (up): L3 192.168.5.3/24 memif51/0 (up): L3 192.168.51.3/24 L3 fd51::51/64 memif6/0 (up): L3 192.168.6.3/24 memif61/0 (up): L3 192.168.61.3/24 L3 fd61::61/64 memif7/0 (up): L3 192.168.7.3/24 memif71/0 (up): L3 192.168.71.3/24 L3 fd71::71/64 memif8/0 (up): L3 192.168.8.3/24 memif81/0 (up): L3 192.168.81.3/24 L3 fd81::81/64 tuntap-0 (up):
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