o Change almost all magic numbers to the appropriate constants. o Fix zero payloading, unbreak ping -s 0. o Increase socket recieve buffer, ping -s 65467 is working now.
o Change almost all magic numbers to the appropriate constants.
o Fix zero payloading, unbreak ping -s 0.
o Increase socket recieve buffer, ping -s 65467 is working now.

Submitted by:	anti-magic sweep based on kris's patch
Reviewed by:	bde, silence on -audit
MFC after:	2 months

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