While doing some work on some ip options stuff, I have noticed a bunchof 
unused entries in linux/include/linux/ip.h

A few things.. why is ip.h not part of the linux/include/net rather than 
linux/include/linux hierachy?

Defined items that are not used anywhere in the source..
Can any of them be deleted now?
<see below>

Also, I was looking into some RFC 1812 stuff. (Thanks for nothing Dave :) and 
was looking at 4.2.2.6 where it mentions that a router MUST implement the End 
of Option List option..  Havent' figured out where that is implememented yet..

Also was trying to figure out some things. 
I want to create a new ip_option for use in some DOS protection experiments.
I have a whole 40 bytes (+/-) to share...  Now although I don't see anything 
explicitly prohibiting the use of unused IP Header option space, I know that 
it really was designed for use by the sending parties, and not routers in 
between.. Has anyone seen any RFC that explicitly says I MUST NOT?


IPTOS_PREC_NETCONTROL
IPTOS_PREC_FLASHOVERRIDE
IPTOS_PREC_FLASH
IPTOS_PREC_IMMEDIATE
IPTOS_PREC_PRIORITY
IPTOS_PREC_ROUTINE
IPOPT_RESERVED1
IPOPT_RESERVED2
IPOPT_OPTVAL
IPOPT_OLEN
IPOPT_MINOFF
MAX_IPOPTLEN
IPOPT_EOL



> diff -urN linux/include/net/ip.h linux.fixed/include/net/ip.h
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