From nobody Thu Apr 21 13:59:01 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 303CD11D948D for ; Thu, 21 Apr 2022 13:59:02 +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 4KkfKL09m0z4g0P for ; Thu, 21 Apr 2022 13:59:02 +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 DB3BD1BA9 for ; Thu, 21 Apr 2022 13:59:01 +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 23LDx1hD045499 for ; Thu, 21 Apr 2022 13:59:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 23LDx1W1045497 for net@FreeBSD.org; Thu, 21 Apr 2022 13:59:01 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 13:59:01 +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: wcarson.bugzilla@disillusion.net 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=1650549542; 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=FIAwlJ0z40Gq9C1e9beq2nmZIwgvtziu3tvGiOPgAr0=; b=DNmVUc/BDI7bv+ASWbus6OUB3FDs/4iASnGlxuCd1LZJvjEhPCb0ojymqGWIGNtIX6Lf/d bgZ2Utobg8XyMdMajjiUXoiQ+V5G9MRc0w9SzN3Di5s1WSnGA0F1Tv4Q/SCkYJQT9yIvzi 0+QKWF63Ngw2O01/JECl8mtwQKkpnAEOicZV3LhIgDMLkQz/M6Ybgj4HglQSvg98lvsNDT fv1hnCirWxYe2DOJ5wEFqdArYXZgM+dna+tJjCj4jt6ksnl+pHwn2uB1MjXb7wp+bcC7eg jZIIBfCnNAqzVM/Zc1+w82OfhXP4GA6VBoTQnKjZQugGCMQvj68FBuwFPxMANA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1650549542; a=rsa-sha256; cv=none; b=D30fQRkhq4tmYDfTdwBbuh7UEOnR8wHKhGkOHeNGuiz98IR0R1YLvf1uGALrmzS6j/vlEl WeCc6+dDjwMHOOOwylbUnWO0urA2rvf/gHl8HyCxVm44sMPLNZRM7Kzp1ft9AArelOgnxD EYgc2ZA5W4xGdu4jrLB/ieI7zVW8qZr/TVsnwxGIiecjXR3+vsrRSPaQo5bOHBCC3rrQuq Ll480gSDQuuq586zMZj7Qa0Idcyc9DbF/7iqEl86a0DELAz2Q8yCOk15NN5VmruRWThdTF /UpAbBIQ4B/kPd8qJZEcvvFRCXRLVs2VCLDoLbapU5mjTgDtbhwzD4H2vYFGJQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263288 --- Comment #13 from wcarson.bugzilla@disillusion.net --- I'm not sure how to answer your FIB questions, but here are the results of = the commands: root@roast:~ # sysctl net.fibs net.fibs: 1 root@roast:~ # sysctl net.add_addr_allfibs net.add_addr_allfibs: 0 root@roast:~ # ifconfig em0 | grep fib root@roast:~ # Also as soon as I changed net.inet6.icmp6.nd6_onlink_ns_rfc4861 -> 1, it started working. I find this very surprising because I hadn't even provisio= ned this server yet in 2008, and IPv6 had worked for many years up until just recently. Is the on-link flag a setting my provider could have changed? Changing back net.inet6.icmp6.nd6_onlink_ns_rfc4861 -> 0 I expected it to b= reak so I could take a packet capture, and ... well, even after more than 15 min= utes it's still working.=20 I did still have this in my scrollback, but I don't know if it has the data you're looking for since it's not a full capture (tcpdump -nnvvv): 00:43:51.408006 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) 2600:3c00::e6c7:22ff:fe10:9cc1 > ff02::1:ffb0:a56f: [icmp6 sum = ok] ICMP6, neighbor solicitation, length 32, who has 2600:3c00::f03c:91ff:feb0:= a56f source link-address option (1), length 8 (1): e4:c7:22:10:9c:c1 0x0000: e4c7 2210 9cc1 00:43:51.408416 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) 2600:3c00::e6c7:22ff:fe10:9cc1 > ff02::1:ffb0:a56f: [icmp6 sum = ok] ICMP6, neighbor solicitation, length 32, who has 2600:3c00::f03c:91ff:feb0:= a56f source link-address option (1), length 8 (1): e4:c7:22:10:9c:c1 0x0000: e4c7 2210 9cc1 I will keep a close eye on this and try a reboot to see if it persists. If = it breaks again I will take a packet capture as described. Thank you so much for all your help thus far! --=20 You are receiving this mail because: You are the assignee for the bug.=