Date: Sun, 6 Nov 2011 18:19:12 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: Michael Ross <michael.ross@gmx.net> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Get list of ethernet devices Message-ID: <alpine.BSF.2.00.1111061815300.35710@wonkity.com> In-Reply-To: <op.v4jwfcrahalquq@michael-think> References: <op.v4jwfcrahalquq@michael-think>
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On Mon, 7 Nov 2011, Michael Ross wrote: > I'm setting up a system on an external USB drive, > serving as fallback in case of a server failure: > > Customer takes USB drive, plugs it into any of his PCs and boots of it. > > Now I am looking for a good method to configure the network: > > I could just start dhclient on any NIC which could possibly be there, > thus cramming rc.conf with > ifconfig_em0="DHCP" > ifconfig_em1="DHCP" > ifconfig_fxp0="DHCP" > and so on. > > Or I could grep ifconfig or dmesg output for ethernet interfaces and dhclient > these. > > Both sound like a very messy solution. > > So I would step beyond my current area of expertise, grep some source from > sysinstall, bsdinstall or somewhere and do it in C. > But I'm kind of hoping anybody can point me to a readymade solution yet > unknown to me. ifconfig_DEFAULT="DHCP" It's not well documented. I'd also suggest using SYNCDHCP as more likely to work predictably on unknown equipment.
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