Date: Sun, 8 Jun 2025 15:22:51 GMT From: Juraj Lutter <otis@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 99ec65e7fe61 - main - traceroute6(8): Stop probing on networks rejected. Message-ID: <202506081522.558FMpsA051262@gitrepo.freebsd.org>
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The branch main has been updated by otis: URL: https://cgit.FreeBSD.org/src/commit/?id=99ec65e7fe61e3148dde543ed7d6566fe589a565 commit 99ec65e7fe61e3148dde543ed7d6566fe589a565 Author: Juraj Lutter <otis@FreeBSD.org> AuthorDate: 2024-11-11 22:39:00 +0000 Commit: Juraj Lutter <otis@FreeBSD.org> CommitDate: 2025-06-08 15:21:24 +0000 traceroute6(8): Stop probing on networks rejected. Stop probing after receiving ICMP6_DST_UNREACH and print ICMP6 error code. The behavior can be observed by tracing the route to, for example, 2a02:ee80:4028:1126:: Discussed with: Job Snijders, Nick Hilliard Obtained from: OpenBSD Reviewed by: markj, jlduran Differential Revision: https://reviews.freebsd.org/D47520 --- usr.sbin/traceroute6/traceroute6.8 | 6 ++++-- usr.sbin/traceroute6/traceroute6.c | 4 ++++ 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/usr.sbin/traceroute6/traceroute6.8 b/usr.sbin/traceroute6/traceroute6.8 index f185b8087411..406a96a04424 100644 --- a/usr.sbin/traceroute6/traceroute6.8 +++ b/usr.sbin/traceroute6/traceroute6.8 @@ -27,7 +27,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd February 2, 2024 +.Dd November 12, 2024 .Dt TRACEROUTE6 8 .Os .\" @@ -75,7 +75,7 @@ .Sh DESCRIPTION The .Nm -utility uses the IPv6 protocol hop limit field to elicit an ICMPv6 +utility uses the IPv6 protocol hop limit field to elicit an ICMP6 TIME_EXCEEDED response from each gateway along the path to some host. .Pp The only mandatory parameter is the destination host name or IPv6 address. @@ -191,6 +191,8 @@ Destination Unreachable - Not a Neighbour. Destination Unreachable - Address Unreachable. .It !H Parameter Problem - Unrecognized Next Header Type. +.It !<num> +ICMP6 unreachable code <num>. .It !\& This is printed if the hop limit is <= 1 on a port unreachable message. This means that the packet got to the destination, but that the reply had a hop diff --git a/usr.sbin/traceroute6/traceroute6.c b/usr.sbin/traceroute6/traceroute6.c index bfa840b3b1c2..173e97c13bb3 100644 --- a/usr.sbin/traceroute6/traceroute6.c +++ b/usr.sbin/traceroute6/traceroute6.c @@ -1009,6 +1009,10 @@ main(int argc, char *argv[]) printf(" !"); ++got_there; break; + default: + ++unreachable; + printf(" !<%d>", code & 0xff); + break; } } else if (type == ICMP6_PARAM_PROB && code == ICMP6_PARAMPROB_NEXTHEADER) {
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