Authoritative Resources for Public DNS Pinging

[Mike Hammett <nanog () ics-il net>]

Yes, pinging public DNS servers is bad. 


Googling didn't help me find anything. 


Are there any authoritative resources from said organizations saying you shouldn't use their servers for your 
persistent ping destinations? 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP