--- radvd-2.17.orig/includes.h	2018-02-18 12:58:50.980506485 +0000
+++ radvd-2.17.orig/includes.h	2018-02-18 13:00:28.277501104 +0000
@@ -88,7 +88,7 @@ 
 #include <net/if_types.h>
 #endif
 
-#if defined(HAVE_NET_IF_ARP_H) && !defined(ARPHRD_ETHER) && !defined(HAVE_LINUX_IF_ARP_H)
+#if defined(HAVE_NET_IF_ARP_H) && !defined(ARPHRD_ETHER)
 #include <net/if_arp.h>
 #endif /* defined(HAVE_NET_IF_ARP_H) && !defined(ARPHRD_ETHER) */
 
@@ -103,7 +103,7 @@ 
 #ifdef HAVE_IFADDRS_H
 #include <ifaddrs.h>
 #endif
-#ifdef HAVE_LINUX_IF_ARP_H
+#if !defined(HAVE_NET_IF_ARP_H) && defined(HAVE_LINUX_IF_ARP_H)
 #include <linux/if_arp.h>
 #endif