[Xastir] UDP frames

[Alan Crosswell]

Sending multicast requires no host changes.  In fact, a couple of worms have 
scanned multicast address space and cause a storm of multicast state creation:-(

Receiving multicast (joining) requires adding a system call.
/a

Bill Vodall wrote:
> 
> 
> 
>>Yes, but no need for the host stack to receive the packets.  Even in a shared 
>>broadcast domain it still makes sense to multicast.
> 
> 
> Does that still allow us to use standard system calls.   We could be able to take one
> of the PERL scripts (old hog counter..) and connect to a feed.  Then replace the
> logging or print handling with some sort of function to UDP multicast.
> 
>  while (1) {
>    $packet = aprs-is();
>    udpsend( "44.24.139.255", $packet)
> }
> 
> 
> A receiving function should be similar...
> 
> Bill
> 
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