On Friday, January 4, 2002, at 03:56 PM, Leo Bicknell wrote:
> In a message written on Fri, Jan 04, 2002 at 01:26:54PM -0800, William > Carrel wrote: >> See now you've made me curious, and I ask myself questions like: How >> robust is PMTU-D against someone malicious who wants to make us send >> tinygrams? Could the connection eventually be forced down to an MTU so >> low that no actual data transfer could occur, or TCP frames with only >> one byte of information? > > I don't have the RFC handy, but aren't all Internet connected hosts > required to support a minimum MTU of 576 from end to end with no > fragmentation? Thus if we ever got an MTU less than 576 we should > ignore it. Right? RFC 879 (http://www.rfc.net/rfc879.html) would tend to disagree... (10) Gateways must be prepared to fragment datagrams to fit into the packets of the next network, even if it smaller than 576 octets. -- Andy Carrel - [EMAIL PROTECTED] - +1 (425) 201-8745 Seņor Systems Eng. - Corporate Infrastructure Applications - InfoSpace To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
