Date: Mon, 24 May 2004 10:59:10 -0400 From: "Louis A. Mamakos" <louie@TransSys.COM> To: Alex Semenyaka <flist@jabberwock.rinet.ru> Cc: Peter Pentchev <roam@ringlet.net> Subject: Re: [RFC] ifconfig: match by link-level address Message-ID: <20040524145910.E776920F68@whizzo.transsys.com> In-Reply-To: Your message of "Mon, 24 May 2004 18:27:43 %2B0400." <20040524142743.GA5564@qqmore.rinet.ru> References: <20040520162919.GA1971@straylight.m.ringlet.net> <20040520171833.GA22494@Odin.AC.HMC.Edu> <20040521133530.GA1403@qqmore.rinet.ru> <20040523233737.219F720FC5@whizzo.transsys.com> <20040524034049.GA1022@qqmore.rinet.ru> <20040524135147.2BF7320F6C@whizzo.transsys.com> <20040524142743.GA5564@qqmore.rinet.ru>
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> Well actually you should discuss the necessity of the changes in ifconfig with > the author of the original posting :) What I proposed was just middle way > between what he proposed and what I did. I mean if somebody is changing > ifconfig anyway that way would be easier to implement. However personally > I did the job without any modification of ifconfig at all. Sorry if I dropped into the middle of the thread, and replied to the wrong message. > > I'm not sure how much easier "automatic" renaming might be. You still > > need some ability to specify policy on what interfaces are renamed > > (e.g., only 100Base-T ethernet but not 802.11 wireless). > > What I am trying to solve is the situation when you have a box with (say) 4 > etherexpresses and first on them is dead. Then old fxp1 becomes fxp0, > old fxp2 becomes fxp1 and so on. And now you cannot remotely connect to that > box abd find out what is going on, that's it. > > So I want automatic renaming during the boot, but I want it controlled: > "this card will have the name intel0, that on - intel1", and it should > leave untouched cards without explicit entry in the renaming config. It > is the way I did it. Do you see any disadvanatges there? Sure, I understand what you're after. > About the media type... well, I believe that if I will pick the MAC-address > of the card and new name I know what that card is, right? I do ifconfig, > choose cards I want to rename, and create renaming config. Why do I need to > specify also media type? Is it possible that my wireless adaptor will have > the same MAC-adress as my Inter Etherexpress? I believe not. I mentioned this example because I have more than one PCMCIA 802.11 NIC cards, and I may not care which one happens to be inserted at any given time, since they tend to rotate between a couple of different laptop computers. For my situation, since there's only one of these things that can be installed, I don't need to worry about what MAC address it uses. In fact, I have my DHCP server set up to hand out very different types of addresses based on what card is inserted (either a globally routed address, or an address that gets NAT'ed on the way out). So in this case, the per MAC address policy is done elsewhere. I think this is a very useful capability; I think that I've also seen stuff move around when reconfiguring the BIOS, or certainly when moving cards around. This capability seems like a more general solution than buying multiple vendor's cards.. louie
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