Hi,
VPP is not learning the MAC address on receiving an RA. Even after
receiving multiple RAs from a neighbor, ping to the link local address of
that neighbor results in a NS/NA resulting in the drop of 1st ping packet.
Is this expected?
Just like learning the MAC from NA/NS, why can't learning be triggered for
an RA?
Packet 3
00:30:08:261191: memif-input
memif: hw_if_index 1 next-index 4
slot: ring 0
00:30:08:261208: ethernet-input
frame: flags 0x1, hw-if-index 1, sw-if-index 1
IP6: 7a:55:92:76:00:01 -> 33:33:00:00:00:01
00:30:08:261217: ip6-input
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:08:261236: ip6-mfib-forward-lookup
fib 0 entry 4
00:30:08:261246: ip6-mfib-forward-rpf
entry 4 itf 1 flags Accept,
00:30:08:261250: ip6-replicate
replicate: 2 via [@1]: dpo-receive
00:30:08:261255: ip6-local
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:08:261279: ip6-icmp-input
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:08:261288: icmp6-router-advertisement
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:08:261299: ip6-drop
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:08:261302: error-drop
rx:memif11/11
00:30:08:261303: drop
ip6-icmp-input: valid packets
Packet 4
00:30:17:270341: memif-input
memif: hw_if_index 1 next-index 4
slot: ring 0
00:30:17:286366: ethernet-input
frame: flags 0x1, hw-if-index 1, sw-if-index 1
IP6: 7a:55:92:76:00:01 -> 33:33:00:00:00:01
00:30:17:286375: ip6-input
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:17:286381: ip6-mfib-forward-lookup
fib 0 entry 4
00:30:17:286388: ip6-mfib-forward-rpf
entry 4 itf 1 flags Accept,
00:30:17:286392: ip6-replicate
replicate: 2 via [@1]: dpo-receive
00:30:17:286396: ip6-local
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:17:286404: ip6-icmp-input
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:17:286407: icmp6-router-advertisement
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:17:286415: ip6-drop
ICMP6: fe80::7855:92ff:fe76:1 -> ff02::1
tos 0x00, flow label 0x0, hop limit 255, payload length 32
ICMP router_advertisement checksum 0xfc3d
00:30:17:286417: error-drop
rx:memif11/11
00:30:17:286422: drop
ip6-icmp-input: valid packets
DBGvpp# ping fe80::7855:92ff:fe76:1 source memif-0/0/0/10
76 bytes from fe80::7855:92ff:fe76:1: icmp_seq=2 ttl=63 time=28.0089 ms
76 bytes from fe80::7855:92ff:fe76:1: icmp_seq=3 ttl=63 time=28.0221 ms
76 bytes from fe80::7855:92ff:fe76:1: icmp_seq=4 ttl=63 time=24.0218 ms
76 bytes from fe80::7855:92ff:fe76:1: icmp_seq=5 ttl=63 time=32.0252 ms
Statistics: 5 sent, 4 received, 20% packet loss
DBGvpp#
Thanks
Vyshakh
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