* configure.ac (AC_CHECK_HEADERS): Remove linux/if_packet.h.
* net.c: Include <linux/if_packet.h> unconditionally.
AC_CHECK_HEADERS([linux/mqueue.h],,, [#include <linux/types.h>])
-AC_CHECK_HEADERS([linux/in6.h linux/if_packet.h],,,
+AC_CHECK_HEADERS([linux/in6.h],,,
[#include <stddef.h>
#include <sys/socket.h>
#include <asm/types.h>])
#if defined(HAVE_LINUX_NETFILTER_IPV6_IP6_TABLES_H)
# include <linux/netfilter_ipv6/ip6_tables.h>
#endif
-#if defined(HAVE_LINUX_IF_PACKET_H)
-# include <linux/if_packet.h>
-#endif
+#include <linux/if_packet.h>
#include <linux/icmp.h>
#ifdef HAVE_BLUETOOTH_BLUETOOTH_H
# include <bluetooth/bluetooth.h>