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Date:      Sat, 25 Aug 2018 12:17:01 +0200 (CEST)
From:      sthaug@nethelp.no
To:        Alexander V. Chernikov <melifaro@ipfw.ru>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Does FreeBSD do proactive ARP refresh?
Message-ID:  <20180825.121701.146601904.sthaug@nethelp.no>
In-Reply-To: <20180706.002623.74678174.sthaug@nethelp.no>
References:  <14964521521306770@web10o.yandex.ru> <20180319.123058.74660594.sthaug@nethelp.no> <20180706.002623.74678174.sthaug@nethelp.no>

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>> > >> =A0And thank you for that suggestion! The packet loss during AR=
P refresh
>> > >> =A0(of the destination address connected to the output interfac=
e) does
>> > >> =A0*not* happen when the box is forwarding! It only happens wit=
h 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 AR=
P
>> 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?

I see that r331098 has been MFC'ed. Thank you!

Steinar Haug, Nethelp consulting, sthaug@nethelp.no



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