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Date: Fri, 06 Jul 2018 00:26:23 +0200 (CEST)
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To: Alexander V. Chernikov <melifaro@ipfw.ru>
Cc: freebsd-net@freebsd.org
Subject: Re: Does FreeBSD do proactive ARP refresh?
From: sthaug@nethelp.no
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Followup:

> > >> =A0And thank you for that suggestion! The packet loss during ARP=
 refresh
> > >> =A0(of the destination address connected to the output interface=
) does
> > >> =A0*not* happen when the box is forwarding! It only happens with=
 locally
> > >> =A0generated traffic.
> > Should be fixed by r331098.
> =

> I can confirm that 12.0-CURRENT with the r331098 updates fixes this
> problem for me for locally generated traffic. The ARP entry seems to
> be refreshed around 4 seconds before expiry, and there is no packet
> loss.
> =

> Transit traffic (non locally generated) also works as before, the ARP=

> entry is refreshed before expiry and there is no packet loss.
> =

> Thanks for the quick fix! Now waiting for the MFC :-)

Looks like the r331098 fix hasn't been MFCed. With 11.2 released,
could we have MFC of r331098, please?

Steinar Haug, Nethelp consulting, sthaug@nethelp.no