Subject: Re: Patch to change ethernet link addresses
To: None <firstname.lastname@example.org>
From: Dheeraj Reddy <email@example.com>
Date: 08/08/2003 08:29:15
On Fri, Aug 08, 2003 at 16:47:03 +0900, firstname.lastname@example.org wrote:
> >Hello all
> > I am attaching a patches that allow ifconfig to change the ethernet
> >MAC addresses temporarily. (the new new MAC address is good until a reboot).
> >the diffs are against sources after an update today.
> >I have checked this code on two ethernet cards that I have (both pcmcia).
> >Thanks Jaromir for encouraging.
> SIOC?LIFADDR is for assigning address by sockaddr_storage. if you
> we (NRL/KAME) intentionally did not define SIOCSLIFADDR, as "Set"
> semantics would be ambiguous when there are multiple addresses assigned
> onto the interface. please do not add SIOCSLIFADDR (the API is
> discussed with third parties and agreed upon). my advice is to issue
> SIOCDLFADDR then issue SIOCALFIADDR.
> next, you are putting ethernet address directly into sockaddr_storage.
> please use AF_LINK sockaddr.
i believe you mean SIOCDLIFADDR and SIOCALIFADDR respectively. but won't
the former break the semantics too ?? as was indicated in
in fact i asked the same/similar question a week or so ago and there were
So you mean i should issue SIOCDLIFADDR in ifconfig (userland) and then
issue another ioctl with SIOCALIFADDR (in if.c) when handling SIOCDLIFADDR ??
of course i shall try to change the code to use AF_LINK sockaddr .