ipv6无法获取邻居地址

[root@centos7 dpdk-19.11]# ip n | grep 'fe80::4a57:2ff:fe64:e7ae'
fe80::4a57:2ff:fe64:e7ae dev enp5s0 FAILED
[root@centos7 dpdk-19.11]# ping6 fe80::4a57:2ff:fe64:e7ae%enp5s0
PING fe80::4a57:2ff:fe64:e7ae%enp5s0(fe80::4a57:2ff:fe64:e7ae%enp5s0) 56 data bytes
^C
--- fe80::4a57:2ff:fe64:e7ae%enp5s0 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2090ms

[root@centos7 dpdk-19.11]#

对端tcpdump

root@ubuntu:~# tcpdump -i enahisic2i3 ip6 and "ip6[40]==0x3a" -vvv -ttt
tcpdump: listening on enahisic2i3, link-type EN10MB (Ethernet), capture size 262144 bytes
 00:00:00.000000 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff93:fc90 to_ex { }]
 00:00:00.279979 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff93:fc90 to_ex { }]
 00:00:00.295599 IP6 (hlim 1, next-header Options (0) payload length: 76) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 3 group record(s) [gaddr ff02::fb to_in { }] [gaddr ff02::fb to_in { }] [gaddr ff02::1:ffaa:d7d8 to_in { }]
 00:00:00.384972 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff5a:6173 to_ex { }]
 00:00:00.019412 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffa6:6041 to_ex { }]
 00:00:00.171592 IP6 (hlim 1, next-header Options (0) payload length: 76) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 3 group record(s) [gaddr ff02::fb to_in { }] [gaddr ff02::fb to_in { }] [gaddr ff02::1:ffaa:d7d8 to_in { }]
 00:00:00.298966 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff5a:6173 to_ex { }]
 00:00:00.124997 IP6 (hlim 1, next-header Options (0) payload length: 76) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 3 group record(s) [gaddr ff02::fb to_in { }] [gaddr ff02::fb to_in { }] [gaddr ff02::1:ffa4:2a5c to_in { }]
 00:00:00.060012 IP6 (hlim 1, next-header Options (0) payload length: 76) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 3 group record(s) [gaddr ff02::fb to_in { }] [gaddr ff02::fb to_in { }] [gaddr ff02::1:fffd:2340 to_in { }]
 00:00:04.834748 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::378c:21ee:edcd:f573 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffcd:f573 to_ex { }]
 00:00:00.429975 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::378c:21ee:edcd:f573 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffcd:f573 to_ex { }]
 00:00:02.746678 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:01.019916 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:00.160017 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::b502:9e1d:e16d:5f68 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:00.029968 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::b502:9e1d:e16d:5f68 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:00.399982 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::b502:9e1d:e16d:5f68 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:00.079991 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::b502:9e1d:e16d:5f68 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff6d:5f68 to_ex { }]
 00:00:00.300020 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:00.479953 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:01.429966 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::c71a:1199:f0e8:f07c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:00.029971 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::c71a:1199:f0e8:f07c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:00.039991 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::c71a:1199:f0e8:f07c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:00.299986 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::c71a:1199:f0e8:f07c > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ffe8:f07c to_ex { }]
 00:00:01.468010 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff72:3a74 to_ex { }]
 00:00:00.819950 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff72:3a74 to_ex { }]
 00:00:00.685266 IP6 (hlim 1, next-header Options (0) payload length: 36) :: > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff38:a6e3 to_ex { }]
^C 00:00:00.050730 IP6 (hlim 1, next-header Options (0) payload length: 36) fe80::7870:3433:2572:3a74 > ff02::16: HBH (rtalert: 0x0000) (padn) [icmp6 sum ok] ICMP6, multicast listener report v2, 1 group record(s) [gaddr ff02::1:ff72:3a74 to_ex { }]

27 packets captured
64 packets received by filter
31 packets dropped by kernel
6 packets dropped by interface