Date: Thu, 21 Apr 2022 09:15:06 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263288 --- Comment #11 from Zhenlei Huang <firstname.lastname@example.org> --- (In reply to wcarson.bugzilla from comment #10) > However in the above debug message it added an extra :1 after ff02 in the > destination that does not appear in the tcpdump. Is that normal? It may be the embedded form of IPv6 link-local scoped address, see https://docs.freebsd.org/en/books/developers-handbook/ipv6/#ipv6-scope-index . If your host is not for production, try turn on 'net.inet6.icmp6.nd6_onlink_ns_rfc4861' to see if it helps. # sysctl net.inet6.icmp6.nd6_onlink_ns_rfc4861=1 Be aware that knob is to prevent CVE-2008-2476, see also https://www.freebsd.org/security/advisories/FreeBSD-SA-08:10.nd6.asc. The symptom is weird, and I could not reproduce it. Do you have multiple fibs? Check these: # sysctl net.fibs # sysctl net.add_addr_allfibs # ifconfig em0 | grep fib It will also be helpful if you provide traffic dumps. # tcpdump -nvi em0 'icmp6' -w dump.pcap and then # service rtsold restart && sleep 3 && ndp -c && ping6 ipv6.google.com -- You are receiving this mail because: You are the assignee for the bug.