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=239749 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 the 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=1 Then the TCP connections should not stall, but should automatically reduce the MSS after a (small) number of retransmissions. -- You are receiving this mail because: You are the assignee for the bug.help
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