Date: Wed, 12 Jan 2005 12:31:19 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: "Kevin Oberman" <oberman@es.net> Cc: nesg@es.net Subject: Re: IPv6 TCP transfers are hanging Message-ID: <y7v3bx7s4qg.wl@ocean.jinmei.org> In-Reply-To: <20050111220129.356815D07@ptavv.es.net> References: <20050111220129.356815D07@ptavv.es.net>
next in thread | previous in thread | raw e-mail | index | archive | help
>>>>> On Tue, 11 Jan 2005 14:01:29 -0800, >>>>> "Kevin Oberman" <oberman@es.net> said: > I think I have found a problem with TCP when run over IPv6. > I set my MSS for TCP to 1460 to allow a full 1500 byte MTU to be > utilized on my systems. (Yes, I see that this does break some things > like communicating via links where PMTUD is blocked and one or more > links restrict MTU to some size less than 1500 bytes. > What I am specifically seeing is a packet being sent out with a TCP > length of 1460. While this is fine for IPv4, it's too back for IPv6 and, > as you might expect, the far end never receives this packet. Two questions to clarify things: 1. Which version of FreeBSD are you using? 2. How did you set the MSS? JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?y7v3bx7s4qg.wl>