From nobody Thu Apr 21 09:15:06 2022 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 36C9D11D2C5B for ; Thu, 21 Apr 2022 09:15:06 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KkX1j637Bz4tXK for ; Thu, 21 Apr 2022 09:15:05 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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 B081E25D8E for ; Thu, 21 Apr 2022 09:15:05 +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 23L9F5Fr097127 for ; Thu, 21 Apr 2022 09:15:05 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 23L9F5qU097126 for net@FreeBSD.org; Thu, 21 Apr 2022 09:15:05 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 263288] IPv6 system not responding to Neighbor Solicitation Date: Thu, 21 Apr 2022 09:15:06 +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: 13.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: zlei.huang@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1650532505; 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=cnO4qNt2rqKMv2sBTLB21rf4ZcgtqnXfByrIzJiJoQM=; b=YxfzJ0twzxP//kiOLF/g/+ybILbfJTlSTxm18F3zKTDF306UwUY3m7IC6E1P38ASrum/Zg 61r1CL/7vJj6FP0oPw3IGpbSVS3yuqItNNrn0UKuyrBguGkiot2XMysIRPr8dj69CDJOny AnnQnZI7cuhRAMGuec76nAukroPcMPayloPelP+kR7uZLQsJ9zmMISB7YkV9rqMqp4EkCI q35eKQUxlDimX1FCw6KgiBtOlIOtoQEvrdZjgJPWa9auL1D6WDlhOk77fVMfALrTjb3ls+ 0Rxiq63vbgpW5aFR/w+ioE8VY82OMuAEHEotcfedOrzmykIhH9MjFgANFPDq1w== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1650532505; a=rsa-sha256; cv=none; b=CrHWS3CHdaWRBG2/+mH+Qcc1nqjLd/LHqdFEpTQX86FWQy/qMKuCHcHdKaLTcWwUWHtA3z wd6OieBPEdxTiE/1EMHXUT+Uo30BcGPPSK4MTJft+qcqmfXSuTM98cpPQmO9sQpFWTbmcD RhxlAdu9mOouq/gYZ+OAs/5AyiYIZ+ryK4qK1Xke5UkJZWaUzCN2B9Wfo5hrpgM0fUJGxO BCqOOY7T9Q3QaQg3ojCgAnqgO09h0Wq8abWj9NG87MD9ZYUnVAFquXQSMf53/3blLApJS9 uTP/R6EgcOsK3ZlKdl+JFvZ16SpsDf0SZrpEL+TGc6bzjPYjMnl7JAJgyTpHEg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263288 --- Comment #11 from Zhenlei Huang --- (In reply to wcarson.bugzilla from comment #10) > However in the above debug message it added an extra :1 after ff02 in the= =20 > destination that does not appear in the tcpdump. Is that normal? It may be the embedded form of IPv6 link-local scoped address, see https://docs.freebsd.org/en/books/developers-handbook/ipv6/#ipv6-scope-inde= x . If your host is not for production, try turn on 'net.inet6.icmp6.nd6_onlink_ns_rfc4861' to see if it helps. # sysctl net.inet6.icmp6.nd6_onlink_ns_rfc4861=3D1 Be aware that knob is to prevent CVE-2008-2476, see also https://www.freebsd.org/security/advisories/FreeBSD-SA-08:10.nd6.asc. The symptom is weird, and I could not reproduce it. Do you have multiple fibs? Check these: # sysctl net.fibs # sysctl net.add_addr_allfibs # ifconfig em0 | grep fib It will also be helpful if you provide traffic dumps. # tcpdump -nvi em0 'icmp6' -w dump.pcap and then=20 # service rtsold restart && sleep 3 && ndp -c && ping6 ipv6.google.com --=20 You are receiving this mail because: You are the assignee for the bug.=