From nobody Tue Apr 26 03:42:20 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 B62B51A841E7 for ; Tue, 26 Apr 2022 03:42:20 +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 4KnSPS3kqtz4hpV for ; Tue, 26 Apr 2022 03:42:20 +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 6187C27640 for ; Tue, 26 Apr 2022 03:42:20 +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 23Q3gKvn067707 for ; Tue, 26 Apr 2022 03:42:20 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 23Q3gK14067706 for net@FreeBSD.org; Tue, 26 Apr 2022 03:42:20 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: Tue, 26 Apr 2022 03:42:20 +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=1650944540; 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=iKFEx4tizIB184olSVK+KrVrKIAFFr+g4E5feKQSdPo=; b=AE+1KzXKnbBidlLbpzdLiXsClVDv51coMh6vk2qYCtmZnN7KXK5FM4ezvHjrjZlmanlMl3 Ehf8EVKsQ/JVNE3skP72yM9py2eaKeeeAYxqMAnE9tMIPsmaplOa432GhP0kFTuIu+XOkz baBrJhbqjYbvplkhdi60rGLpX/a18CgMze1VP/iN8awctpKmIdpf0NHsj3UhWnech8I9pQ x67fZkqYu9iTZyjk1JYQ+qT3+bfxNIpdn16pRKK58F1aU3C7RkbV5bGfvPNMyZCbSvJVAO HYf5HWnBjGOkDcqRVTFw3By4l3CfdA5x4NbZ1Nwp8rHlzymOMknRkThXtfdg3A== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1650944540; a=rsa-sha256; cv=none; b=nfsIyh/nlHJColCnAiVDy64WsuiKH3xPRbQzeYnXzqeJxaRkeU+kN3bdHZT8Qjt9fhaaCR SFAsOZX6E5MfbbCv58VkPONJNDjirHhyNEFZiNikGlYwv7AIoZ8V7Jjp0Zjxb/167oQMXK cab9zc2yURaGz76Pwyppy4QooKu7U1ug/cyRajyK7h/T+zo0CVO4ARNHHtp/JFDCFCfA1m u8hXbQ6At3qiLY5V3CSRbaIQpdH/e34el9Sh8n8ri+xtNlx25gv1gTXzvfhYMEVOnajj+o 3DKjL9f/jDh/Jb1M8k1sZgWRgZHo0YxRFnqfOsyj57VhRB4Yo06KA60nwrJXcQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263288 --- Comment #18 from Zhenlei Huang --- (In reply to wcarson.bugzilla from comment #17) > To be perfectly clear: 2600:3c00::/64 is shared insofar as other customer= s have VMs > with IPv6 addresses on the same IPv6 subnet. Your SLAAC-assigned IPv6 add= ress - > 2600:3c00::f03c:91ff:feb0:a56f - is a /128 range, which essentially makes= it a > single IPv6 address which only your VM can use. If other customers do NOT send spoofed NS packets, or your provider has mea= ns to prevent spoofed NS packets, then it is safe to turn on 'net.inet6.icmp6.nd6_onlink_ns_rfc4861'.=20 > The addresses within your /64 range - 2600:3c00:e000:0137::/64 - can only= be used > by the VM it's routed towards. Since your provider provided routed /64 block, the upstream router should h= ave route to this /64 block, then the SLAAC-assigned IPv6 address 2600:3c00::f03c:91ff:feb0:a56f is not required, and you can use 2600:3c00:e000:0137::/64 directly. You can keep 'nd6_onlink_ns_rfc4861' untouched and try this: # ping6 -S 2600:3c00:e000:0137:cafe:8a2e:0370:7334 ipv6.google.com or disable SLAAC: # service rtsold stop # ifconfig em0 inet6 -accept_rtadv # ifconfig em0 inet6 2600:3c00::f03c:91ff:feb0:a56f delete # route -6 get default || route -6 add default fe80::1%em0 # ping6 ipv6.google.com --=20 You are receiving this mail because: You are the assignee for the bug.=