[c-nsp] BGP network stops being advertized

[Deepak Jain]

>> loopback or another interface (usually a static route of last resort 
>> to the loopback address/interface). 
> 
> loopback or null?
> 

In the "old" days, null was handled by CPU (software switched), so lots
of us old-timers got into the habit of using loopback instead of null. 
On a modern platform it should make no operational difference provided 
you have everything you need set up properly. (null routing the /16, for 
example, might be bad if you ever actually try to route that whole 
prefix instead of just subs -- as it would be specific and static).

Deepak Jain
AiNET