Vyshakh, That’s certainly what the RFC says. Care to submit a patch?
Cheers Ole > On 9 Apr 2020, at 06:10, vyshakh krishnan via lists.fd.io > <vyshakh=rtbrick....@lists.fd.io> wrote: > > > 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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