From nobody Thu Dec 16 10:30:32 2021 X-Original-To: freebsd-stable@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 7B4F718EBC46 for ; Thu, 16 Dec 2021 10:30:51 +0000 (UTC) (envelope-from matpockuh@gmail.com) Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JF7gH2Lyxz4bRB; Thu, 16 Dec 2021 10:30:51 +0000 (UTC) (envelope-from matpockuh@gmail.com) Received: by mail-lj1-x22c.google.com with SMTP id i63so37813574lji.3; Thu, 16 Dec 2021 02:30:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:subject:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language; bh=JmIsAkl79A8kvAf0E5YJ8b67ealdYH3S5oQEEkVfWmA=; b=pW8+pJkDA2z1+S6W749Zgv798xmQOxPiAmNIKfxdzaQtp/efu9nWmmQ3p70fTCIjj9 3Iq9wEgzXkScredS7i8shIBQhtDJAQ/LqpPf5sAslD3/MpMVObt1Ph3QyKq4YlssxzM3 UXTBE619lRwxHZd7A45ATIJjiUdXR5j3tMjvJuS/JiudwFK07OSR84jTDXE8K4w3PROL o5t0LYUDuyhYX6+OATLEG5IV+z+UGVZAcvGzQnGksLWGAq/5L0xtLfQmLQfGu/4+1lYT 20U3JiGcTMmuibZZjOtTm7DiidQHWz5Qv0SXusrx0wnhfgjJcF9bR4P0UGezU0FfSpXa DL1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:subject:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=JmIsAkl79A8kvAf0E5YJ8b67ealdYH3S5oQEEkVfWmA=; b=0I4J81x0xcYTyL7+5gBY27Se1Et580TtZMT82z6Xx6FKgo1vpMfWmLUYhm3FZoe8ZU ZDyTXoNQoKllDEPdpFcpjIlO+hEtIHW0nk1XKN+dRCo7qv4ALqmxNwIf/uW2DQiNygJj QlKJuBUyawMxIqcVX+J5FCqrm3dOeQzX2lPtU0mSig0KvQcnT86QqOJc3m2mam5C7UkY QVQKRboFrJgUcr2P3Py7SBXkJCfmCWOJ+v1jyJKrNoQZYciDGx0eahWD7YMFeGRjVxG3 /TgV0D8JGfLCa019U/UQrHqtXzULMuB21GpEgEZjsFeL8G9QeLyOjucCwsznLeVAIGKs qJqw== X-Gm-Message-State: AOAM533QjsA+xNQJcDRxrl9dS6Sc11Sayde4OX16LNzEaE4PVgfx03PI kXcCKYETtPFh+s+XiOctFHrMzkyOusfe8w== X-Google-Smtp-Source: ABdhPJxdhmcJrmv+fpuMGxY/LeaessmiJ8yNQIIlUkLmWRrnTA/t+tUXceZClwUNEiVa2B3gJlUJQg== X-Received: by 2002:a2e:a311:: with SMTP id l17mr14185636lje.9.1639650644279; Thu, 16 Dec 2021 02:30:44 -0800 (PST) Received: from [192.168.18.64] (green.kot.spb.ru. [94.19.52.107]) by smtp.gmail.com with ESMTPSA id b32sm1052894ljf.41.2021.12.16.02.30.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 16 Dec 2021 02:30:43 -0800 (PST) From: KOT MATPOCKuH X-Google-Original-From: KOT MATPOCKuH Subject: Re: ping -6 ignores -e parameter To: Alan Somers Cc: freebsd-stable List References: Message-ID: <22748b81-2ae8-babd-d07e-752ed15dce58@GMail.Com> Date: Thu, 16 Dec 2021 13:30:32 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 List-Id: Production branch of FreeBSD source code List-Archive: https://lists.freebsd.org/archives/freebsd-stable List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/mixed; boundary="------------71E341D5D02D154144AEB5F0" Content-Language: en-US X-Rspamd-Queue-Id: 4JF7gH2Lyxz4bRB X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N This is a multi-part message in MIME format. --------------71E341D5D02D154144AEB5F0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hello, Alan! I'm sorry, I'm forget to add freebsd-stable@ to CC: list. Yes, I'm using FreeBSD 13: 13.0-STABLE Today I have a native IPv6 access and my inet6 routing table is: # netstat -rn6 | grep -v -e lo0 Routing tables Internet6: Destination Gateway Flags Netif Expire default fe80::206:29ff:fee9:32a9%lan0 UG lan0 fd00:dead:beef:100::/64 link#5 U lan0 fe80::%lan0/64 link#5 U lan0 fe80::%bridge0/64 link#6 U bridge0 This means my default gateway is reachable via lan0. A node which link-local address fe80::2a0:98ff:fe1d:e270 is reachable via bridge0: # ping -c 1 fe80::2a0:98ff:fe1d:e270%bridge0 PING6(56=40+8+8 bytes) fe80::5a9c:fcff:fe10:ff9e%bridge0 --> fe80::2a0:98ff:fe1d:e270%bridge0 16 bytes from fe80::2a0:98ff:fe1d:e270%bridge0, icmp_seq=0 hlim=64 time=0.804 ms But ping anyway sends packets via lan0. Also I tried to configure fd13:dead:beef::2 on bridge0, on corresponding node I configured fd13:dead:beef::1, and then run a command: ping -6 -e fd13:dead:beef::1 google.com In this way ping uses source IP address from bridge0 interface, but sends via lan0 and to next-hop fe80::206:29ff:fee9:32a9%lan0: # tcpdump -epni lan0 icmp6 12:33:23.308763 8c:ec:4b:e9:28:23 > 00:06:29:e9:32:a9, ethertype IPv6 (0x86dd), length 70: fd13:dead:beef::2 > 2a00:1450:4010:c1e::8a: ICMP6, echo request, seq 52, length 16 I'm wrote a simple script to check this problem. I checked this script on image of VM from freebsd'site which FreeBSD-13. Please see attached file. On 15/12/2021 21:32, Alan Somers wrote: > On Wed, Dec 15, 2021 at 11:16 AM KOT MATPOCKuH wrote: >> >> Hello! >> >> In a man page for ping(8) and in it's help output I found option "-e": >> -e gateway >> Specifies to use gateway as the next hop to the destination. The >> gateway must be a neighbor of the sending node. >> >> I tried to use this argument, ping ignores this parameter and sends the packet via default gateway. >> For example I have a tun0 which has ipv6 default gw, and an established bridge0 which has available some LL addresses: >> Neighbor Linklayer Address Netif Expire S Flags >> fe80::2a0:98ff:fe1d:e270%bridge0 00:a0:98:1d:e2:70 bridge0 23h56m34s S R >> >> I tried to run: >> ping -6 -e FE80::2A0:98FF:FE1D:E270%bridge0 google.com >> But the packet was sent via tun0 interface. >> >> What is wrong with it? >> >> -- >> MATPOCKuH > > What version of FreeBSD are you using? There was a major change to > ping's code in FreeBSD 13. Please show the output of > 'freebsd-version' and 'netstat -rn'. > -Alan > --------------71E341D5D02D154144AEB5F0 Content-Type: application/x-shellscript; name="ping-e.sh" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="ping-e.sh" IyEvYmluL3NoCgppZmNvbmZpZyBlcGFpcjEgcGx1bWIKaWZjb25maWcgZXBhaXIxYSB1cApp ZmNvbmZpZyBlcGFpcjIgcGx1bWIKaWZjb25maWcgZXBhaXIyYSB1cAoKaWZjb25maWcgYnJp ZGdlMSBwbHVtYiBhZGRtIGVwYWlyMWEKaWZjb25maWcgYnJpZGdlMSBpbmV0NiAtaWZkaXNh YmxlZCBmZDAwOjE6OjIvNjQgYXV0b19saW5rbG9jYWwKaWZjb25maWcgYnJpZGdlMiBwbHVt YiBhZGRtIGVwYWlyMmEKaWZjb25maWcgYnJpZGdlMiBpbmV0NiAtaWZkaXNhYmxlZCBmZDAw OjI6OjIvNjQgYXV0b19saW5rbG9jYWwKCmlmY29uZmlnIGVwYWlyMWIgbmFtZSBndzEKamFp bCAtYyBuYW1lPWd3MSBwYXRoPS8gdm5ldCB2bmV0LmludGVyZmFjZT1ndzEgYWxsb3cucmF3 X3NvY2tldHM9MSBwZXJzaXN0PTEKamV4ZWMgZ3cxIGlmY29uZmlnIGd3MSBpbmV0NiAtaWZk aXNhYmxlZCBmZDAwOjE6OjEvNjQgYXV0b19saW5rbG9jYWwKaWZjb25maWcgZXBhaXIyYiBu YW1lIGd3MgpqYWlsIC1jIG5hbWU9Z3cyIHBhdGg9LyB2bmV0IHZuZXQuaW50ZXJmYWNlPWd3 MiBhbGxvdy5yYXdfc29ja2V0cz0xIHBlcnNpc3Q9MQpqZXhlYyBndzIgaWZjb25maWcgZ3cy IGluZXQ2IC1pZmRpc2FibGVkIGZkMDA6Mjo6MS82NCBhdXRvX2xpbmtsb2NhbAoKIyBDaGVj ayByZWFjaGFiaWxpdHkKcGluZyAtYyA0IGZkMDA6MTo6MQpwaW5nIC1jIDQgZmQwMDoyOjox CnJvdXRlIC02IGFkZCBkZWZhdWx0IGZkMDA6MTo6MQpwaW5nIC1lIGZkMDA6Mjo6MSBmZDAw OjM6OjEKIyBJbiBhbm90aGVyIHdpbmRvdyBjaGVjayB0cmFmZmljIG9uIGJyaWRnZTEKdGNw ZHVtcCAtYyAxIC1lcG5pIGJyaWRnZTEgaWNtcDYKCiMgSSBnb3Q6CiMgMTA6MjI6MzguOTc2 Mjk5IDU4OjljOmZjOjEwOjA0Ojc1ID4gMDI6Njc6ZjE6MGQ6NjY6MGIsIGV0aGVydHlwZSBJ UHY2ICgweDg2ZGQpLCBsZW5ndGggNzA6IGZkMDA6Mjo6MiA+IGZkMDA6Mzo6MTogSUNNUDYs IGVjaG8gcmVxdWVzdCwgc2VxIDUyLCBsZW5ndGggMTYKIyBmZDAwOjI6OjIgaXMgYSBhZGRy ZXNzIG9mIGJyaWRnZTIsIGJ1dCAwMjo2NzpmMTowZDo2NjowYiAtIG1hYyBhZGRyZXNzIG9m IGd3MQo= --------------71E341D5D02D154144AEB5F0--