Date: Mon, 05 Mar 2007 19:24:56 +0000 From: Tom Judge <tom@tomjudge.com> To: aditya kiran <adityaa.kiran@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: PMTU Discovery support Message-ID: <45EC6E88.3080101@tomjudge.com> In-Reply-To: <994cd1cf0703050842r5e54daa6y5fe6af3083e15cd@mail.gmail.com> References: <994cd1cf0703050842r5e54daa6y5fe6af3083e15cd@mail.gmail.com>
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aditya kiran wrote: > Hi, > I'm just trying to understand the PMTU Discovery support > in FreeBSD. Is upward PMTU (increase in PMTU) is also > discovered when PMTU Discovery is enabled? > Thanks, > Aditya As I understand it, it is not possible to detect upward changes in the path MTU as there is no mechanism for a router to generate an error when a packet is small enough to be accommodated by the MTU of the link to the next hop. I may be wrong though. Tom
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