Network extensions

@icecrime 
This is a kernel restriction; I’m not sure 8 is the right value, but it’s close to it.

-Erik

> On Dec 4, 2014, at 5:10 PM, Arnaud Porterie <notifications@github.com> wrote:
> 
> In extensions/simplebridge/driver.go:
> 
> >  // discovery driver? should it be hooked here or in the core?
> >  func (d *BridgeDriver) Link(id, name string, s sandbox.Sandbox, replace bool) (network.Endpoint, error) {
> > +	if vethNameTooLong(name) {
> I'm a little confused here: I believe name should the symbolic name identifying sandbox s inside network id. Basically, this is the equivalent of our current "sad_einstein" or whatever, but scoped to a particular network. As such, I don't there should be any restriction (besides perhaps being a legal hostname?).
> 
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