Date: Sun, 27 Dec 2009 07:24:23 +0900 (JST) From: Hiroki Sato <hrs@FreeBSD.org> To: hyama99@gmail.com Cc: freebsd-net@FreeBSD.org Subject: Re: GIF MTU parmeter is needed Message-ID: <20091227.072423.122179742.hrs@allbsd.org> In-Reply-To: <90dbee150912261333l602c4161nccaf1995dc83699a@mail.gmail.com> References: <90dbee150912261333l602c4161nccaf1995dc83699a@mail.gmail.com>
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----Security_Multipart(Sun_Dec_27_07_24_23_2009_387)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hideki Yamamoto <hyama99@gmail.com> wrote in <90dbee150912261333l602c4161nccaf1995dc83699a@mail.gmail.com>: hy> Hi, hy> hy> I often use FreeBSD for developing the gateway. For example, I use gif for the hy> tunnel protocol when using IPv6 over IPv4 and use an application for changing hy> packet address for special purpose. When we were using old FreeBSD, such as hy> FreeBSD 4.11, the MTU of the tunnel packets or forwarded packets hy> was not limited into 1280. However, FreeBSD 6,7, and 8 fragments packets hy> by 1280 when using tunnel. The gif(4) interface supports MTU up to 8192 and this has not been changed since FreeBSD 4.X IIRC. Why did you think FreeBSD 6 and later supported a fixed MTU only? -- Hiroki ----Security_Multipart(Sun_Dec_27_07_24_23_2009_387)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEABECAAYFAks2jRcACgkQTyzT2CeTzy3OyQCdFJ5YPPUdhkW+IXAAuYL3/vAE y9YAnApCHddlfzQ5n4QtiAeamjXdbYAe =CBEv -----END PGP SIGNATURE----- ----Security_Multipart(Sun_Dec_27_07_24_23_2009_387)----
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