Date: Wed, 24 Dec 2008 16:00:39 +0200 From: "Yony Yossef" <yonyossef.lists@gmail.com> To: freebsd-net@freebsd.org Cc: eitans@mellanox.co.il, Yehonatan Yossef <yoniy@mellanox.co.il>, liranl@mellanox.co.il, yevgenyp@mellanox.co.il Subject: net.inet.udp.blackhole issue Message-ID: <20def4870812240600n6edbcad7k2100a0ccbe49f0dd@mail.gmail.com>
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Hi All, I'm facing lots of UDP "Connection refused" errors while running multistream iperf test. Analyzing it with wireshark showed several "ICMP Port Unreachable" problems. I've overriden it with "sysctl net.inet.udp.blackhole=1", but I'm not sure this is the correct thing to do, I feel like I've sweeped the problem under the carpet. PS - I see similar failures with TCP bidirectional iperf test, it can also be overriden by "sysctl net.inet.tcp.blackhole=1". My question is - can it be a NIC problem? If so, how can a driver problem cause an iperf UDP socket to be in a "non listening state"? Thanks, Yony
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