From nobody Wed Dec 18 03:44:31 2024 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 4YCfgg4tRxz5gh1h for ; Wed, 18 Dec 2024 03:44:31 +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 "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4YCfgg34qDz4Jkr for ; Wed, 18 Dec 2024 03:44:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1734493471; 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=fN55qkXKZd7vL4XZm62DV+cMOSgjyzxext9j2uKREpU=; b=YDivnhyS4X6DCn4MTk9V1qxEHl/2Z+E0f+x5fI0ZVVCIty3hM3pQy7eQmRMqQC9sion67X 2tElx+m9N7WkNcyVy0VvFECNMV5wrZSNxcJJTHiKWcNbFa3u7XRHmP3/Xooza62mRZxOP5 5LaVbAq8PCWA13mUhw2w3Di2HIBYQiYU1h0N3G+WeTloRYJyJNijfiaxrVMlZTkzbF9wUQ p4HTaYt+lka2kRooKc2DDpuTJJGXmg6qUwXkQtBId8BXFUfo4LeJihzFWPvlaYCvm+X42Q pCq8efyBtYYDkF4zAWA7h2vK7U/ICjPl7MgNt+uOiFR5k269dqFW5P9d3vPj9g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1734493471; a=rsa-sha256; cv=none; b=luuWsx80KzN7ULDyEMvlGAWMZ1E7ualSgNyx0DGuTtLgms94W6LE88iq+7xPlm+5c8bI0B sJUoHAO36YTNthjg4CyqglnGfTsZBbRw+okz7eY9UgpitoXSiIj2a+vWKrc+fXQbB4L+iY tBvrQK+6p9xKkvQ86Si8/XL0M5pfWiX8jGAS7CwJ+QPByQzh8V5wFvDrPKecAqjpOVT7Y0 LKY7KcC1FnGAzB5Em1U64Sevps3/SbnkFjhSFHFR9V3gVwTFuPf99EG/O0qBJEPqRhCs14 r4i72HAsabND5Yx1Bo0HVnvTA922UWAabQvegqCGqWbMbSOR4X+Klutm+Mmdcw== 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 4YCfgg2hWjzrSn for ; Wed, 18 Dec 2024 03:44:31 +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 4BI3iVj1059259 for ; Wed, 18 Dec 2024 03:44:31 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 4BI3iVMP059258 for net@FreeBSD.org; Wed, 18 Dec 2024 03:44:31 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 283380] FreeBSD accepts and processes IPv4 packets destined to non-local MAC addresses instead of dropping them Date: Wed, 18 Dec 2024 03:44:31 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: zlei@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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=3D283380 Zhenlei Huang changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |zlei@FreeBSD.org --- Comment #3 from Zhenlei Huang --- (In reply to Joerg Goltermann from comment #0) > the system accepts and forwards IP packets to non-local MAC addresses whi= ch can be > seen on a tcpdump eg tcpdump -netttti vtnet2 host 146.185.xx.yy You may want to turn on the tcpdump(1) option `--no-promiscuous-mode`. By default tcpdump(1) will put the interface into promiscuous mode, i.e., the interface will see all traffic. You can also check if the interface is put into promiscuous mode by ifconfig(8). ``` $ ifconfig cxl0 | grep PROMISC cxl0: flags=3D8902 metric 0 mtu 1500 ``` You're welcomed to report back if the issue persists. --=20 You are receiving this mail because: You are the assignee for the bug.=