Date: Tue, 26 Nov 2019 15:42:10 -0500 From: Ali Mashtizadeh <mashtizadeh@gmail.com> To: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Mellanox NIC + Bridge + VM traffic issues on 12.1-RELEASE Message-ID: <CAFL8=ti_W9PGfDOUppXkQovV6W%2BORA8Hj2M62ADpq4wu6bcghg@mail.gmail.com>
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Hello Everyone, I've noticed something strange happening after I upgraded to FreeBSD 12.1 on one machine. My VM is bridged to a Mellanox ConnectX4 that connects to our cluster of machines. Traffic appears to go between the VM and external machines except for ARP replies. I noticed ARP replies from the VM do not make it to the external network and appear to be dropped by the NIC. All network connectivity is fine when using an Intel ixl NIC. Has anyone seen this? Does this have something to do with the NIC offloads? I experimented with them but did not succeed in fixing ARP traffic. Best, Ali
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