Date: Fri, 24 Jan 2020 12:31:01 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 239749] Issues path MTU discovery on IPv6 and SSH. Message-ID: <bug-239749-7501-1kj3vUMWAV@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-239749-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-239749-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239749 Michael Tuexen <tuexen@freebsd.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tuexen@freebsd.org --- Comment #10 from Michael Tuexen <tuexen@freebsd.org> --- I guess you traced at the router. Could you run the first and third scenario with tracing at the client and t= he router at the same time? I'm wondering if the client receives the ICMPv6 PTB message at all. Right now, I don't see a problem with the TCP stack on the client side. To improve the situation, you could enable blackhole detection by setting sudo sysctl -w net.inet.tcp.pmtud_blackhole_detection=3D1 Then the TCP connections should not stall, but should automatically reduce = the MSS after a (small) number of retransmissions. --=20 You are receiving this mail because: You are the assignee for the bug.=
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