Date: Thu, 11 Jun 2020 21:48:13 +0200 From: Andreas Longwitz <longwitz@incore.de> To: freebsd-net@freebsd.org Subject: pxeboot is very slow on servers sending gratuitous ARP probably caused by commit r317887 Message-ID: <5EE28A7D.7090406@incore.de>
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After update from FreeBSD V10 Stable to FreeBSD 12 Stable (r360998) the load of a kernel in pxeboot via NFS is very slow because my server sends gratuitous ARP packets every 2 seconds. pxeboot from 11.1 REL (r321354) is ok. pxeboot from 11.2 REL (r335563) is very slow too. For every ARP the server sends the kernel download in pxeboot stops for two seconds and then continues after timeout of 2 seconds (because of work done in r329264). I am quite sure that commit r317887 changed things for ARP packets. pxe does not use udpsend/udpreceive anymore and the new code with undi interface does nothing to filter the ARP's. Andreas Longwitz
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