[Bug 262345] Intermediate router ::ffff: does not appear in traceroute6

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 04 Mar 2022 17:38:37 UTC

            Bug ID: 262345
           Summary: Intermediate router ::ffff: does not
                    appear in traceroute6
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: jasonmader@gmail.com

Not sure if this is an expected behavior, but traceroute6 doesn't show the
::ffff: responses, even though FreeBSD 13.0 appears to be
receiving them.

# traceroute6 -n www.google.com
 2  * * *

17:31:09.673870 IP6 (hlim 250, next-header ICMPv6 (58) payload length: 152)
::ffff: > freebsd: [icmp6 sum ok] ICMP6, time exceeded in-transit
for iad66s02-in-x04.1e100.net

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