Does FreeBSD do proactive ARP refresh?

sthaug at nethelp.no sthaug at nethelp.no
Sat Aug 25 10:17:04 UTC 2018


>> > >>  And thank you for that suggestion! The packet loss during ARP refresh
>> > >>  (of the destination address connected to the output interface) does
>> > >>  *not* happen when the box is forwarding! It only happens with locally
>> > >>  generated 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?

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

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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