[svlug] followup on port 4156 ping storm problem

[dfox]

> 
> Have you called your DSL carrier and told them about
> it?  How about finding out where those IPs are and

I'm going to send them a message. I've been able to find
out on some of the IPs, others say NXDOMAIN on them. I think
sending mail directly to postmaster@<ipaddress> works, if it
does, that'll simplify the script a lot. But that's not
going to be helpful, as many IPs are likely going to be 
dialups.