IGMP fragmentation bug in Windows 98/2000

[Coolio <coolio@K-R4D.COM>]

Windows 98's TCP/IP stack chokes on fragmented IGMP packets. There is an
exploit out there called "fawx" that supposedly exploits this problem,
but I haven't had any success crashing Windows with it. Recently I was
given source to a program that reliably crashed Win98/98SE/2000 build 2000
and challenged my friend defile to see who could write a version of it
utilizing handcrafted igmp/ip headers for source spoofing support. Here is
the resulting code that works against most systems with one or two tries.

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