vke & link level addressing

[Chris Turner]

Simon 'corecode' Schubert wrote:
> 
> rather make it [label], so that it follows a known format.
>
agree on the known format,
but a vote for getcap(3) style - keep it unix!

Although the approach taken by openvpn is also good,
in that all config file options are allowed by commandline
and vice-versa via simple gnu style '--' options,

the config file then becomes a listing of these options,
and multiple configurations are simply handled by multiple files.

but I think I still prefer getcap for consistency despite it's quirks.