Date: Sun, 10 Jun 2001 23:29:07 +0900 (JST) From: Hajimu UMEMOTO <ume@mahoroba.org> To: brooks@one-eyed-alien.net Cc: hackers@FreeBSD.ORG, brian@Awfulhak.org, phk@critter.freebsd.dk Subject: Re: cloning network interfaces Message-ID: <20010610.232907.74740159.ume@mahoroba.org> In-Reply-To: <20010608191904.A18847@Odin.AC.HMC.Edu> References: <200106071119.f57BJr766008@hak.lan.Awfulhak.org> <20010607164812.A32379@Odin.AC.HMC.Edu> <20010608191904.A18847@Odin.AC.HMC.Edu>
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Hi,
>>>>> On Fri, 8 Jun 2001 19:19:04 -0700
>>>>> Brooks Davis <brooks@one-eyed-alien.net> said:
brooks> Following Brian's suggestion, I've modified gif to create a /dev/if_gif
brooks> device with is controlled by the IOCIFMANAGE ioctl which allows creation
brooks> and deletion of specific devices and creation of wildcard devices. I've
brooks> hacked ifconfig to support this in a general manner. If you know which
brooks> one you want to use you can do something like
I think it is not BSD network way. Recent NetBSD has network
interface cloning. It uses SIOCIFCREATE and SIOCIFDESTROY. It may
good to port it to FreeBSD.
brooks> ifconfig gif783 10.0.0.1 10.0.0.2
brooks> # gifconfig has to come second because I didn't add creation support to
brooks> # it because I want to kill it off in favor of ifconfig "tsrc" and
brooks> # "tdst" parameters like Solaris uses.
brooks> gifconfig gif783 blah
brooks> or if you don't care which one you use you can do
brooks> newgif=`ifconfig gif#`
brooks> gifconfig ${newgif} blah
brooks> ifconfig ${newgif} 10.0.0.1 10.0.0.2
brooks> You can also delete interfaces:
brooks> ifconfig -D gif783
NetBSD's ifconfig has `create' and `destroy' keyword for it.
You can create gif interface by
ifconfig gif0 create
or
ifconfig gif0 create tunnel 10.0.0.1 10.0.2.2
To destroy gif interface:
ifconfig gif0 destroy
BTW, gifconfig will be obsoleted soon as KAME and other BSDs did.
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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