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Re: [Openvpn-users] --dev vs --dev-node


  • Subject: Re: [Openvpn-users] --dev vs --dev-node
  • From: h105@xxxxxxx
  • Date: Fri, 9 Jan 2004 04:03:30 -0500 (EST)


 Thanks James,

  I've renamed under Windows the TAP drivers to test1 and 
test2, and now I use both --dev and --dev-node options, and 
things now work: I can use both interfaces at the same time:

 opevpn --dev test1 --dev-node test1 ...
 opevpn --dev test2 --dev-node test2 ...

  Thx,

     John


On Tue, 6 Jan 2004, James Yonan wrote:

> Date: Tue, 6 Jan 2004 19:59:09 -0000
> From: James Yonan <jim@xxxxxxxxx>
> To: h105@xxxxxxx, openvpn-users@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [Openvpn-users] --dev vs --dev-node
> 
> h105@xxxxxxx said:
> 
> > 
> > 
> >  Hi,
> > 
> >   I'm a bit confused with the purpose of --dev vs --dev-node.
> > 
> >   On Linux I'm using  only --dev  and things work fine (I've 
> > --mktun'd a few interfaces ahead of time)
> > 
> >   But on Windows -  what does --dev refer to, and what does 
> > --dev-node refer to ?
> 
> Think of --dev as selecting the tunnel type and unit number such as "tun" or
> "tap" or "tun5" and --dev-node selecting the device filename of the specific
> tun or tap device to use.
> 
> On linux 2.4, you don't generally need to specify --dev-node because the
> default of "/dev/net/tun" is usually correct.  So if you just say --dev tun on
> linux, it causes OpenVPN to automatically allocate a dynamic tun interface.
> 
> On windows, --dev-node must be used because each tun/tap device has its own
> filename associated with it, in the part of the directory structure windows
> uses for devices (i.e. windows' /dev equivalent).  This is because windows
> does not support dynamic device units.
> 
> James
>