Query on operstatus for link, can I change it?

[Jeff Haran]

> -----Original Message-----
> From: kernelnewbies-bounces+jharan=bytemobile.com at kernelnewbies.org
> [mailto:kernelnewbies-
> bounces+jharan=bytemobile.com at kernelnewbies.org] On Behalf Of Amit
> Agarwal
> Sent: Tuesday, July 14, 2015 12:54 PM
> To: Kernelnewbies
> Subject: Re: Query on operstatus for link, can I change it?
> 
... 
> One last query on this, does this interface receive any packet by default of
> any protocol.

I think of the two virtual interfaces as real NICs with a cable between them. I am pretty sure they are protocol agnostic.

> If so, how do I make sure that no packets other than one
> injected by me are seen on this interface. Sorry, if this sounds too stupid, but
> I am noob in this area.

That's what routing tables are for. 8^)

Jeff Haran