Date: Sun, 26 Apr 1998 00:52:12 +0200 (MEST) From: Hans Huebner <hans@artcom.de> To: Mike Smith <mike@smith.net.au> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: FreeBSD HA configuration / Ethernet address takeover Message-ID: <Pine.BSF.3.96.980426003432.489A-100000@transrapid.artcom.de> In-Reply-To: <199804251913.MAA00572@antipodes.cdrom.com>
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Hello again, On Sat, 25 Apr 1998, Mike Smith wrote: > In your case, if you know the adapter(s) you're using, you could add > code to allow the change to be made. This would involve implementing > the SIOCGIFHWADDR and SIOCSIFHWADDR (get/set hardware address) socket > ioctls, which would be relatively simple. I looked at the DE21040 documentation and found out that you're right. I also found out that this particular Ethernet chip allows for multiple MAC addresses to be used by one Ethernet interface. This raises the question whether I should ignore that functionality and use Linux' understanding of SIOC[GS]IFHWADDR, which allows for one MAC address per Ethernet interface. The implementation would be almost trivial, as Mike suggested. A clean interface to an ethernet interface with multiple MAC addresses would propably require changes to the system configuration so that the physical ethernet interface becomes a 'controller' and the logical ethernet interface becomes a 'device' on that controller. This sounds like being a bit hefty to me, given the fact that most people don't seem to consider changing their MAC addresses worthwile at all ;) Thanks for your input so far! -Hans To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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