From owner-freebsd-net@freebsd.org Wed Mar 6 13:03:00 2019 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7E4CC1514800 for ; Wed, 6 Mar 2019 13:03:00 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from forward100j.mail.yandex.net (forward100j.mail.yandex.net [IPv6:2a02:6b8:0:801:2::100]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A8B2C8CC89 for ; Wed, 6 Mar 2019 13:02:58 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from mxback7o.mail.yandex.net (mxback7o.mail.yandex.net [IPv6:2a02:6b8:0:1a2d::21]) by forward100j.mail.yandex.net (Yandex) with ESMTP id 66D6B50E2402; Wed, 6 Mar 2019 16:02:46 +0300 (MSK) Received: from smtp2o.mail.yandex.net (smtp2o.mail.yandex.net [2a02:6b8:0:1a2d::26]) by mxback7o.mail.yandex.net (nwsmtp/Yandex) with ESMTP id vNYrybxjw0-2kxac2aG; Wed, 06 Mar 2019 16:02:46 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1551877366; bh=loP+eANPciDq9NQ9cSPXzVBaM5ebC6qF05N0FesWZFY=; h=In-Reply-To:From:To:Subject:Cc:Date:References:Message-ID; b=Z+Za3bqH42OA6cidyNa/g6Ft84gVbQCwjwURLggnygZqXfVyCAPD3GtOR7BybmoD8 XO4zX9VuChKsyJKNC6KKIW67trIln4zM/txGYPfU0rTUEVnzloObz/REB5VkV1l7gs 0VdsVe5smrV+Ycv7eSQiEpwhQ2i81R2qToZpVIwE= Received: by smtp2o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id mcb8ORcC5q-2jC0oL0x; Wed, 06 Mar 2019 16:02:45 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client certificate not present) Subject: Re: UDP broadcast To: =?UTF-8?Q?Goran_Meki=c4=87?= Cc: freebsd-net@freebsd.org References: <20190305224610.frw5ov5bn6f3xaqg@hal9000.home.meka.rs> <20190306125322.f6v6cir4qtpfz2g5@hal9000.home.meka.rs> From: "Andrey V. Elsukov" Openpgp: id=E6591E1B41DA1516F0C9BC0001C5EA0410C8A17A Autocrypt: addr=bu7cher@yandex.ru; prefer-encrypt=mutual; keydata= mQENBEwBF1kBCADB9sXFhBEUy8qQ4X63Y8eBatYMHGEFWN9ypS5lI3RE6qQW2EYbxNk7qUC5 21YIIS1mMFVBEfvR7J9uc7yaYgFCEb6Sce1RSO4ULN2mRKGHP3/Sl0ijZEjWHV91hY1YTHEF ZW/0GYinDf56sYpDDehaBF5wkWIo1+QK5nmj3vl0DIDCMNd7QEiWpyLVwECgLX2eOAXByT8B bCqVhJGcG6iFP7/B9Ll6uX5gb8thM9LM+ibwErDBVDGiOgvfxqidab7fdkh893IBCXa82H9N CNwnEtcgzh+BSKK5BgvPohFMgRwjti37TSxwLu63QejRGbZWSz3OK3jMOoF63tCgn7FvABEB AAG0JUFuZHJleSBWLiBFbHN1a292IDxidTdjaGVyQHlhbmRleC5ydT6JATgEEwECACIFAkwB F1kCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEAHF6gQQyKF6qmYIAI6ekfm1VA4T vqankI1ISE6ku4jV7UlpIQlEbE7/8n3Zd6teJ+pGOQhN5qk8QE7utdPdbktAzi+x7LIJVzUw 4TywZLXGrkP7VKYkfg6oyCGyzITghefQeJtr2TN4hYCkzPWpylkue8MtmqfZv/6royqwTbN+ +E09FQNvTgRUYJYTeQ1qOsxNRycwvw3dr2rOfuxShbzaHBB1pBIjGrMg8fC5pd65ACH5zuFV A0CoTNGMDrEZSfBkTW604UUHFFXeCoC3dwDZRKOWJ3GmMXns65Ai5YkA63BSHEE1Qle3VBhd cG1w0CB5FBV3pB27UVnf0jEbysrDqW4qN7XMRFSWNAy5AQ0ETAEXWQEIAJ2p6l9LBoqdH/0J PEFDY2t2gTvAuzz+8zs3R03dFuHcNbOwjvWCG0aOmVpAzkRa8egn5JB4sZaFUtKPYJEQ1Iu+ LUBwgvtXf4vWpzC67zs2dDuiW4LamH5p6xkTD61aHR7mCB3bg2TUjrDWn2Jt44cvoYxj3dz4 S49U1rc9ZPgD5axCNv45j72tggWlZvpefThP7xT1OlNTUqye2gAwQravXpZkl5JG4eOqJVIU X316iE3qso0iXRUtO7OseBf0PiVmk+wCahdreHOeOxK5jMhYkPKVn7z1sZiB7W2H2TojbmcK HZC22sz7Z/H36Lhg1+/RCnGzdEcjGc8oFHXHCxUAEQEAAYkBHwQYAQIACQUCTAEXWQIbDAAK CRABxeoEEMihegkYCAC3ivGYNe2taNm/4Nx5GPdzuaAJGKWksV+w9mo7dQvU+NmI2az5w8vw 98OmX7G0OV9snxMW+6cyNqBrVFTu33VVNzz9pnqNCHxGvj5dL5ltP160JV2zw2bUwJBYsgYQ WfyJJIM7l3gv5ZS3DGqaGIm9gOK1ANxfrR5PgPzvI9VxDhlr2juEVMZYAqPLEJe+SSxbwLoz BcFCNdDAyXcaAzXsx/E02YWm1hIWNRxanAe7Vlg7OL+gvLpdtrYCMg28PNqKNyrQ87LQ49O9 50IIZDOtNFeR0FGucjcLPdS9PiEqCoH7/waJxWp6ydJ+g4OYRBYNM0EmMgy1N85JJrV1mi5i Message-ID: <5b04251d-46e6-8bc7-3389-d47952e19c36@yandex.ru> Date: Wed, 6 Mar 2019 16:02:09 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <20190306125322.f6v6cir4qtpfz2g5@hal9000.home.meka.rs> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="gYMkGkKDxDPuEooSCrgmg2DTRAr9c0B0O" X-Rspamd-Queue-Id: A8B2C8CC89 X-Spamd-Bar: ------- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yandex.ru header.s=mail header.b=Z+Za3bqH; dmarc=pass (policy=none) header.from=yandex.ru; spf=pass (mx1.freebsd.org: domain of bu7cher@yandex.ru designates 2a02:6b8:0:801:2::100 as permitted sender) smtp.mailfrom=bu7cher@yandex.ru X-Spamd-Result: default: False [-7.93 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a02:6b8:0::/52]; FREEMAIL_FROM(0.00)[yandex.ru]; HAS_ATTACHMENT(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[yandex.ru:+]; MX_GOOD(-0.01)[cached: mx.yandex.ru]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.99)[-0.994,0]; DMARC_POLICY_ALLOW(-0.50)[yandex.ru,none]; SIGNED_PGP(-2.00)[]; FROM_EQ_ENVFROM(0.00)[]; IP_SCORE(-1.72)[ipnet: 2a02:6b8::/32(-4.79), asn: 13238(-3.83), country: RU(0.00)]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[0.0.1.0.0.0.0.0.0.0.0.0.2.0.0.0.1.0.8.0.0.0.0.0.8.b.6.0.2.0.a.2.list.dnswl.org : 127.0.5.1]; ASN(0.00)[asn:13238, ipnet:2a02:6b8::/32, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yandex.ru.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[yandex.ru]; R_DKIM_ALLOW(-0.20)[yandex.ru:s=mail]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain]; MIME_TRACE(0.00)[0:+,1:+,2:+]; TO_MATCH_ENVRCPT_SOME(0.00)[] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Mar 2019 13:03:00 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --gYMkGkKDxDPuEooSCrgmg2DTRAr9c0B0O Content-Type: multipart/mixed; boundary="zGwLo60xSnsbxOlq18OG4beE8y044Rk2C"; protected-headers="v1" From: "Andrey V. Elsukov" To: =?UTF-8?Q?Goran_Meki=c4=87?= Cc: freebsd-net@freebsd.org Message-ID: <5b04251d-46e6-8bc7-3389-d47952e19c36@yandex.ru> Subject: Re: UDP broadcast References: <20190305224610.frw5ov5bn6f3xaqg@hal9000.home.meka.rs> <20190306125322.f6v6cir4qtpfz2g5@hal9000.home.meka.rs> In-Reply-To: <20190306125322.f6v6cir4qtpfz2g5@hal9000.home.meka.rs> --zGwLo60xSnsbxOlq18OG4beE8y044Rk2C Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 06.03.2019 15:53, Goran Meki=C4=87 wrote: > I checked, and 02:c9:63:0b:f4:00 is my router MAC, so I suppose the > ff:ff:ff:ff:ff:ff should be what I see. >=20 > Of course, I tried to write a simple C program that does the same, but > just using 255.255.255.255 as IP address gives the same result as nc. D= o > I need to use raw sockets, perheps? Take a look at ip(4) manual page, read about SO_BROADCAST and IP_ONESBCAS= T. --=20 WBR, Andrey V. Elsukov --zGwLo60xSnsbxOlq18OG4beE8y044Rk2C-- --gYMkGkKDxDPuEooSCrgmg2DTRAr9c0B0O Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAlx/xNEACgkQAcXqBBDI oXrxZwf+KegJRX6hHPXzXv8YgxOdtzdXhZ0KkuaZVX8PiVY93UEpAjKCEF+zkt61 8+3Wv3bmuh6OXacmFpV5pwiJ/ePhahhyhsskfS9OYJ7E2l8pySoyhF7Pxdfw4Cjf bk9jhzWPoN1MFp/aIPOO3yt/PQiRu6OoAIW8ZoEcdcCjwMZi4Pti1bTuq0Rd1OCl 09MqWtxv7Yr5GOaEGjcbQ7ZqKKmlgUJAbE1d3wExyD74Bbwa6mgJrvamO8eklr6Z /HbSMDDMRCb+mWTRdST9YHVEU7bE9I1NjSOMkoEt4YrQBRwNNw5piNivM0Eaz1D6 h8d10diCpBeSR+dHBhUvzD9+/ilcUA== =o6pA -----END PGP SIGNATURE----- --gYMkGkKDxDPuEooSCrgmg2DTRAr9c0B0O--