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Fri, 13 Feb 2026 11:57:18 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 193246] Bug in IPv6 multicast join(), uncovered by Jenkins Date: Fri, 13 Feb 2026 11:57:16 +0000 X-Bugzilla-Reason: CC AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 10.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: bms@FreeBSD.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: priority bug_file_loc bug_severity Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D193246 Bruce M Simpson changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|--- |Normal URL| |https://reviews.freebsd.org | |/D55031 Severity|Affects Many People |Affects Some People --- Comment #20 from Bruce M Simpson --- Just regained access after nearly a decade. There was some personal tragedy involved. The resolution for this is being tracked at: https://reviews.freebsd.org/D5= 5031 With a minor errno correction at: https://reviews.freebsd.org/D55233 TL;DR This is purely an optional extension. It is not and never was a bug. = The OpenJDK and other software started relying on it over the years, but it rea= lly doesn't fit with how the socket APIs involved were intended to operate, at = all. It largely stems from uncertainty about the extent of IPv4-mapped address support, as tuexen has indicated. The cheap fix is to just do what Apple did and just pass it through to neti= net for simple ASM-mode adds/joins, which is the most common multicast use case anyway, and it's usually for local link scoped groups. --=20 You are receiving this mail because: You are on the CC list for the bug. You are the assignee for the bug.=