Date: Sun, 29 Apr 2012 18:47:52 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-net@freebsd.org Subject: Re: IPv6 MTU discrovery -- how should it work? Message-ID: <1311430753.20120429184752@serebryakov.spb.ru> In-Reply-To: <75233009.20120429183559@serebryakov.spb.ru> References: <75233009.20120429183559@serebryakov.spb.ru>
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Hello, Lev. You wrote 29 =D0=B0=D0=BF=D1=80=D0=B5=D0=BB=D1=8F 2012 =D0=B3., 18:35:59: LS> When I connect to external server twice, and run tcpdump in one LS> session for another one, and then try to use second (sniffed) session LS> for bulk transfer, I can clearly see, that server tries to send IPv6 LS> packets with size 1420 to my local network many times and doesn't LS> get any answer, so it is MTU problem for sure, but how it could be fixe= d? But server# ping6 -D -s 1420 <host-after-tunnel-with-mtu-1280> Works! I don't understand, what happens here :( --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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