Re: Suggestion(?): new ioctl: "resolve hw address and update arp cache"

Dan Forsberg (dforsber@niksula.hut.fi)
Tue, 11 May 1999 15:26:11 +0300 (EEST)

alan> > There could be a new ioctl which returns the arp entry for an ip address
alan> > even if it's not in arp cache? If it's not in cache then kernel could send
alan> > a arp message and find it out. Or perhaps it could be better to include it
alan>
alan> So could your application ...

Yes sure, but if I send a arp request I need to listen all arp responses
and the arp cache isn't updated.

Simple solution in the application is to send something to the host but
that's a kludge ;). And I don't want to send extra packets.

Is it possible to get the mac address for a received ip packet in user
space (negative offset or something)? That could save my day.

Cheers,

-- 
 Dan.Forsberg@iki.fi  Student & Admin HUT/CS
 http://www.iki.fi/Dan.Forsberg
 finger dforsber@niksula.cs.hut.fi






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