On 02/28/2010 08:50:01 AM, Gert Doering wrote:
> Hi,
>
> while working on "make IPv6 payload work on Win32", I found something
> quite peculiar for OpenBSD in the OpenVPN code.
>
> Now, for all operatings systems *except* Win32 and OpenBSD, the
> sequence
> of execution is
>
> open_tun()
> do_ifconfig()
>
> and for the named two systems, it's
>
> do_ifconfig()
> open_tun()
> Question #1: why is OpenBSD treated differently? Does anyone on this
> list
> know why this is so, and whether it needs to be kept that way? (I
> have no
> OpenBSD system to test on, right now).
Random comments....
On OpenBSD 4.6 stable "man 4 tun" says:
A tun interface can be created at runtime using the ifconfig tunN
create
command or by opening the character special device /dev/tunN.
Both layer 3 and layer 2 tunneling is supported. Layer 3
tunneling is
the default mode; to enable layer 2 tunneling mode the link0 flag
needs
to be set with ifconfig(8), or by setting up a hostname.if(5)
configura-
tion file for netstart(8). In layer 2 mode the tun interface is
simulat-
ing an Ethernet network interface.
So, you should not need to do the ifconfig at all unless you're
interested in tap functionality or there's other odd
frobbing going on.
I can't speak for older releases but all the old man pages are
on the OpenBSD.org site.
Karl <[email protected]>
Free Software: "You don't pay back, you pay forward."
-- Robert A. Heinlein
