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Date: Tue, 31 Jan 2012 19:35:17 +0100
From: Dimitry Andric <dim@FreeBSD.org>
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To: "Philip M. Gollucci" <pgollucci@gmail.com>
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Cc: current@FreeBSD.org
Subject: Re: em0 failure on 10-current w/ clang
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On 2012-01-31 17:21, Philip M. Gollucci wrote:
> sudo mv kernel kernel.clang
> sudo mv kernel.old kernel
>
> has me back in action for now on 9.0-RELEASE.
>
> What info can I provide to be of help?
>
>
> Jan 31 16:05:31<4.5>  frieza login: ROOT LOGIN (root) ON ttyv0
> Jan 31 16:06:03<18.5>  frieza sudo:     root : TTY=ttyv0 ; PWD=/root ;
> USER=root ; COMMAND=/etc/rc.d/netif restart
> Jan 31 16:06:03<0.7>  frieza kernel: ifa_del_loopback_route: deletion
> failed: 3
> Jan 31 16:06:03<0.7>  frieza kernel: ifa_add_loopback_route: insertion
> failed: 17
> Jan 31 16:06:05<0.7>  frieza kernel: ifa_del_loopback_route: deletion
> failed: 3
> Jan 31 16:06:05<0.7>  frieza kernel: ifa_add_loopback_route: insertion
> failed: 17
> Jan 31 16:06:05<0.5>  frieza kernel: em0: link state changed to DOWN
> Jan 31 16:06:09<3.3>  frieza dhclient[2315]: em0: not found

I don't think it has anything to do with clang per se; there were some
incompatibilities introduced in ifconfig's ioctls, so you must upgrade
world before being able to use any networking.  This is very annoying if
you want to install of NFS... :(