From nobody Tue Aug 4 20:52:17 2026 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hF5MR0tZQz6nPY1 for ; Tue, 04 Aug 2026 20:52:19 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hF5MQ530Jz3f8l for ; Tue, 04 Aug 2026 20:52:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1785876738; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bGtorc9FK7t00g0O+1c0i0FWwfYjKNzV22d3S1npask=; b=QPffMCXb3OpV9p6TAX5PbdT0Lwx/DVjOl3/UArZ8S2kKtL/CBnLCgw4pUfAH3OIWsNAwaD Gpf5/Wa6NPFBEzNcxfFSc7VimXThFEX3u7RVNNNe7pujVGTQeR3eSHEhACkSflhf/b2ZLK IyYT1WVWiyGe0dmIBnyBWkCHSlWrRzNg8d2zQJUJOVdS8BGWQaq6efX4+ci0IK1Am/80Ff AMSjJhC7xnGIqF5pUOSs3Kkw+exLeZEYVLcsoDrCTN+lifLFFzxKCNViZxRGYgjJOfhWF2 8N1a1pj84xALzZAUvUQHRo9YC/e0wU0D6x6BA0ns8qg11R9XmrVAITdlSpvjgg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1785876738; a=rsa-sha256; cv=none; b=dLefsm1MZtHh/6FaJoycQ7ETGa5dI/LPla61ZDtoma+8Jdxl6NEQxpZDfnM6928Fd2EcQe 3kbjf/gl2/K+o1mmEK9K2Hth+eTqwjK6bs9g3emnECogtCtFcVFZmzY7hBJITUg/dGeB+/ W1OgXr0t/nrRTEIF2BW8N619AKrsI1kJVTyWK1uWWiy29gl4Hog1VHdQUavdaMrm3weKJz O2DIrCFSAe2SRybrDx1jdX338zdxatB3+b7zgG0nHfHDvf7H1AdaucQd8fAaqtaFIpEEml yuwu4BibQ5hq+EBpFsjv3W2ct5XKC0kdFGyfBHjCW6O90edpYdF0adBsVIfjxw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1785876738; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bGtorc9FK7t00g0O+1c0i0FWwfYjKNzV22d3S1npask=; b=d57AcDGRS43gv/ow0S0Z12JYGkCIDkpe6GbvbTyWUQCy9Gn26ToNCpKblPoc1HjHWVJZCc xXpmjVcn7HOZ+VprO7Nye6uT48D3e0+nIZ51BA92Cdp9AbqJ9y8CJEJ52vneC0gWn3I9r/ Trjk/uw59r2F4zwC5au1tSiZ0EPoC7ozIuoHdI8/zjfmyF2QFSoa8wmFr4kNZvtiHKV3X1 417aEcpc3c7vQsnFGQ68xMbOEIrUBYvpwqTJ2vNcU5C5jZqaPhOMqMQn8nQlQa0ubWlyew 07KXSO8q/JsqLUote+TGwHneoV6os4kZNiTY/44riwEA4nWHRdyIeV6qr11xBw== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4hF5MQ3dTTz13Dt for ; Tue, 04 Aug 2026 20:52:18 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 674KqI18023659 for ; Tue, 4 Aug 2026 20:52:18 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 674KqImW023658 for net@FreeBSD.org; Tue, 4 Aug 2026 20:52:18 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: Tue, 04 Aug 2026 20:52:17 +0000 X-Bugzilla-Reason: CC 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: saper@saper.info X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: bms@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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 List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D193246 --- Comment #30 from Marcin Cie=C5=9Blak --- I have updated my -current to 1c0d2f0b1a98526e4f1f5a051ce6904b4c3164e1 and played with Jython a bit. When I try on java 11: import java.net g =3D java.net.InetAddress.getAllByName("228.5.6.7") z =3D java.net.MulticastSocket(6790) z.joinGroup(g[0]) This gives: > jython -Djava.net.preferIPv4Stack=3Dfalse join_mcast.py=20 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by jnr.posix.JavaLibCHelper (file:/usr/local/lib/jython/jython.jar) to method sun.nio.ch.SelChImpl.getF= D() WARNING: Please consider reporting this to the maintainers of jnr.posix.JavaLibCHelper WARNING: Use --illegal-access=3Dwarn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Traceback (most recent call last): File "join_mcast.py", line 4, in z.joinGroup(g[0]) at java.base/java.net.PlainDatagramSocketImpl.join(Native Method) at java.base/java.net.AbstractPlainDatagramSocketImpl.join(AbstractPlainDatagr= amSocketImpl.java:235) at java.base/java.net.MulticastSocket.joinGroup(MulticastSocket.java:328) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Meth= od) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethod= AccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Delegati= ngMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) java.net.SocketException: java.net.SocketException: Invalid argument I can confirm that udp46 socket gets created before the program exists udp46 0 0 *.6790 *.* --=20 You are receiving this mail because: You are on the CC list for the bug.=