tag	line	file	source code
IN_CLASSA_NET	76	include/linux/in.h	#define  IN_CLASSA_HOST    (0xffffffff & ~IN_CLASSA_NET)
IN_CLASSA_NET	56	net/ipv4/devinet.c	return(htonl(IN_CLASSA_NET));
IN_CLASSA_NET	326	net/ipv4/route.c	return htonl(IN_CLASSA_NET);
IN_CLASSA_NET	2890	net/ipv4/tcp.c	return htonl(IN_CLASSA_NET);