BatchARP and IOUnserialize invalid UTF8 errors

René J.V. Bertin rjvbertin at
Tue Jun 30 07:09:41 PDT 2015

On Tuesday June 30 2015 09:29:21 Brandon Allbery wrote:

>Uhhhh... that is not even remotely recommended. DIsabling arp means, among

I know. The idea was to toggle it off and back on ... (which I did despite the fact that `ifconfig -v en0` showed no changes).

>*Batch* arp would be an optimization at the driver level. If it's exposed

Something like promiscuous mode?

>in ifconfig at all, it would probably be under mediaopt; but Apple doesn't

`ifconfig -vm en0` is the only way I see to print mediaopt data, but it doesn't say anything about batch arp.
>include the device specific manpages, at least on 10.9, so no idea how it
>shows up. And in any case, ifconfig won't cause your hardware to return a
>useful configuration value for it if it's reporting garbage.

Evidently. But if this parameter is supposed to contain a string, it might be modifiable and in that case ifconfig would be one of the candidate editors.

Anyway, what value should that parameter have? Do you have it set on one of your interfaces?


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