Internet module (RISC OS version 5.06)
Carl Elkins authored
C.Elkins - added a sysctl interface to control IGMPv2 'fast leave'
	optimisation, so that Internet can be forced to always send
	the leave message (default - implement fast leave as per rfc 2236)
	Note:
	should be used in conjunction with corresponding headers and binaries
	(sysctl and inetstat).
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