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Tue, 12 Aug 2008 09:20:13 -0700 (PDT) Date: Tue, 12 Aug 2008 21:51:34 +0530 From: =?unknown-8bit?B?4KSG4KS24KWA4KS3IOCktuClgeCkleCljeCk?= =?unknown-8bit?Q?=B2?= Ashish Shukla To: freebsd-stable@freebsd.org Message-ID: <20080812162134.GA2652@chateau.d.lf> Mail-Followup-To: freebsd-stable@freebsd.org References: <6338C16505B9465ED4A9CA76@andromede.in.absolight.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="3MwIy2ne0vdjdPXF" Content-Disposition: inline In-Reply-To: X-Face: )vGQ9yK7Y$Flebu1C>(B\gYBm)[$zfKM+p&TT[[JWl6:]S>cc$%-z7-`46Zf0B*syL.C ]oCq[upTG~zuS0.$"_%)|Q@$hA=9{3l{%u^h3jJ^Zl;t7 X-Attribution: =?unknown-8bit?B?4KSG4KS24KWA4KS3?= X-OS-Kernel: Linux X-OS-Version: 2.6.25-gentoo-r7 X-OS-Architecture: x86_64 X-Uptime: 21:21:27 up 3:02, 1 user, load average: 0.00, 0.05, 0.07 X-URL: http://wahjava.wordpress.com/ X-Mail-Morse: .-- .- .... .--- .- ...- .- .--.-. --. -- .- .. .-.. .-.-.- -.-. --- -- X-OpenPGP-Fingerprint: 1E00 4679 77E4 F8EE 2E4B 56F2 1F2F 8410 762E 5E74 X-OpenPGP-ID: 762E5E74 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAMFBMVEWpqambm5uHh4d7e3 ttbW1jY2Pe3t4dHR28vLygoKCenp6SkpJOTk7////9/f35+flcgqXsAAACiUlEQVQ4jX XTz0sUURwA8NlOrkS5ZqIzUO6sCTaBMKuYrVCsM7cgyJ066EUMC5KVgnoEHlY7uJTYbn loBilH6TBvL40a5goZqexl/gWHjl72O+hh8dJub1ydH5t9L4/5fvjOe9/H+1J7/wnqZD UBKnYAQNEHYJWeUPLHsUq5BqzSeWTHnQk/QGlhctKw42fZC6Y1jgxDkiTDKHQBeKBUsN N2FJ6Xi0UXDo1dSagCugIeGCd5Esfw0gXT6pGkhC0JaRhN/nH2MI92SH4lygtiYhihid MK0zyMsTqm6jNrIqlAPxyA8TjGmbp06pwgigV0zwFr5heNM+l0OiiIkg/Wh6pArZLdCx 7oHcJVUMjxjC4HKndjWhXkb6TPLbeiJxxSMoGvqSA9Lw6yVx04QGFlyb5zGc8LGysdDu yjF9o6Qr1IUZeHci0N7q+mHza81tmNL3p26daHVJvb4Myrtjc0GsnjrKq/D9x0r+Txs7 5gDgUWZczk2bcP3IpHnJ4JyhRFyY3hzqduHzCbyNalyGVR2VWe3066sMDRVch18/x3cE +13IkpAqn6iBDbfOcCTF2nszLZIxARoh3gwt5IH8PkNTmY3eyO3va8Kzjgd+IaxgoOtf dveWG/J65jEprafu2TB8ySOJCnbWGiaxe8T7RyY3BAVwg08pfmvGA1FXZ3WzFWV7kmH8 Aoy3YeF+Qv+8D8neAUTWMiHG5M+sfgvoJVJsLroRbffABM6yEmEuVa6c++iTJhlGcjAk erarJmBg/JU+dJk83Fk4QznFPdA2HS+lwtQOVIitE4l6wFMrfDcVpZLP8De1b/dp5uhj NgdlvXLp7mvXDUHm4tnwFQGRubcPIeINMAYDpffwFxLwHEb6QJ2wAAAABJRU5ErkJggg == Organization: /\/0/\/3 User-Agent: Mutt/1.5.16 (2007-06-09) Sender: =?UTF-8?B?4KSG4KS24KWA4KS3IOCktuClgeCkleCljeCksiBBc2hpc2ggU2h1a2xh?= Subject: Re: neighbor discovery problem X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Aug 2008 16:45:43 -0000 --3MwIy2ne0vdjdPXF Content-Type: text/plain; charset=unknown-8bit; format=flowed Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In , Pete French wrote: >> The network is pretty simple, >> >> gateway : >> em0: flags=3D8843 mtu 1500 >> options=3Db >> inet6 fe80::207:e9ff:fe0e:dead%em0 prefixlen 64 scopeid 0x1=20 >> inet6 2a01:678:1:443:: prefixlen 64=20 >> inet6 2a01:678:100:: prefixlen 48=20 > >Hmmm, are machine numbers of all zeroes legal in IPv6 ? I would >configure those as '2a01:678:1:443::1' and '2a01:678:100::1' if >I were you. All zeroes as a machine number is certainly a no-no in >IPv4, and I wouldn't use it in IPv6 either. I have no idea if it's >actually a problem, but it gives me a bad feeling.... Yes, it is legal, and such address, with subnet prefix + all zeroes in the= =20 host identifier (or interface identifier) is known as subnet-router anycast= =20 address. For further information, check out RFC 4291, Section 2.6.1[1]. References: [1] - http://tools.ietf.org/html/rfc4291#section-2.6.1 Ashish Shukla --=20 =B7-- =B7- =B7=B7=B7=B7 =B7--- =B7- =B7=B7=B7- =B7- =B7--=B7-=B7 --=B7 -- = =B7- =B7=B7 =B7-=B7=B7 =B7-=B7-=B7- -=B7-=B7 --- -- --3MwIy2ne0vdjdPXF Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAkihuI4ACgkQHy+EEHYuXnRSzwCeMKaqabepIVh8ndktFkKD5/gC C4oAoOxqiZ2YbqZndt7qA92sNdR+BfbC =uJ35 -----END PGP SIGNATURE----- --3MwIy2ne0vdjdPXF--