netinet/in_systm.h is no longer in upstream and anything that actually
needs it will get it from includes.h.
/*
* Definitions for IP type of service (ip_tos)
*/
-#include <netinet/in_systm.h>
#include <netinet/ip.h>
#ifndef IPTOS_LOWDELAY
# define IPTOS_LOWDELAY 0x10
#include <unistd.h>
#include <netinet/in.h>
-#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <netinet/in.h>
-#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#endif
#include <netinet/in.h>
-#include <netinet/in_systm.h>
#include <netinet/ip.h>
#ifdef HAVE_NET_ROUTE_H
#include <net/route.h>