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Date:      Fri, 18 May 2001 20:08:04 +0900
From:      JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp>
To:        vishwanath pargaonkar <vishubp@yahoo.com>
Cc:        freebsd-net@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject:   Re: ifindex 
Message-ID:  <y7vheyigbjf.wl@condor2.jinmei.org>
In-Reply-To: <20010518050655.12153.qmail@web5301.mail.yahoo.com>
References:  <20010518050655.12153.qmail@web5301.mail.yahoo.com>

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>>>>> On Fri, 18 May 2001 06:06:55 +0100 (BST), 
>>>>> vishwanath pargaonkar <vishubp@yahoo.com> said:

> why is ifindex used for an interface.i know it is said
> itz for unique identification of device.Can we not do
> that using interfac name ?

Yes, you could.  But then

- we should do string comparison to compare two interface indices
 (which is usually much heavier than comparing integers).
- we should check all interface names in order to check the validity
  of a given interface index (i.e. name).

and I believe we'll still see much more weird situations if we
eliminate numeric interface indices.

					JINMEI, Tatuya
					Communication Platform Lab.
					Corporate R&D Center, Toshiba Corp.
					jinmei@isl.rdc.toshiba.co.jp

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