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CentOS 7.0 - man page for ipsec_broadcastof (centos section 3)

IPSEC_SUBNETOF(3)			       Library Functions Manual 			    IPSEC_SUBNETOF(3)

NAME
ipsec_subnetof, ipsec_hostof, ipsec_broadcastof - given Internet address and subnet mask return subnet number, host part, broadcast address
SYNOPSIS
#include <libreswan.h> struct in_addr subnetof(struct in_addr addr, struct in_addr mask); struct in_addr hostof(struct in_addr addr, struct in_addr mask); struct in_addr broadcastof(struct in_addr addr, struct in_addr mask);
DESCRIPTION
These functions are obsolete; see ipsec_networkof(3) for their replacements. Subnetof takes an Internet address and a subnet mask and returns the network part of the address (all in net- work byte order). Hostof similarly returns the host part, and broadcastof returns the broadcast address (all-1s convention) for the network. These functions are provided to hide the Internet bit-munging inside an API, in hopes of easing the eventual transition to IPv6.
SEE ALSO
inet(3), ipsec_atosubnet(3)
HISTORY
Written for the FreeS/WAN project by Henry Spencer.
BUGS
Calling functions for this is more costly than doing it yourself. 11 June 2001 IPSEC_SUBNETOF(3)


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