Date: Tue, 25 Nov 1997 17:40:12 +1030 From: Mike Smith <mike@smith.net.au> To: Jim Carroll <jim@carroll.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Retrieve ethernet mac address Message-ID: <199711250710.RAA00411@word.smith.net.au> In-Reply-To: Your message of "Mon, 24 Nov 1997 20:15:15 CDT." <Pine.BSD.3.91.971124201015.32350Y-100000@apollo.carroll.com>
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> > Could someone point me towards how to retrieve an ethernet mac address from > user-land code ? If it matters, we are running 2.2.1 The best way is using sysctl() as with ifconfig(8). I realise that this is a little fugly. Can you be more specific about which MAC address you want, and what associations you want with the address? > If someone has a working snippet, I would be grateful. A good pointer > towards a FAQ or doc would also be helpful. The best suggestion I can make is to look at the source, and the way that the sysctl variables are established when an interface is created. > I have been staring at netstat and ifconfig source for a few hours, but am > having trouble making heads or tails. netstat usese kvm() and ifconfig uses > sysctl(). I can't find enough docs of either method to get my head around > what is needed to just extract mac address. If all you want is a list of MAC addresses for the local system, I would use ifconfig(8) and awk(1). 8) mike
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