Index: configure
===================================================================
--- configure	(revision 297908)
+++ configure	(working copy)
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 294430 .
+# From configure.ac Revision: 296534 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.65 for asterisk trunk.
 #
@@ -12731,6 +12731,17 @@
 
 fi
 
+ac_fn_c_check_member "$LINENO" "struct ifreq" "ifr_ifru.ifru_hwaddr" "ac_cv_member_struct_ifreq_ifr_ifru_ifru_hwaddr" "#include <net/if.h>
+"
+if test "x$ac_cv_member_struct_ifreq_ifr_ifru_ifru_hwaddr" = x""yes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR 1
+_ACEOF
+
+
+fi
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether time.h and sys/time.h may both be included" >&5
 $as_echo_n "checking whether time.h and sys/time.h may both be included... " >&6; }
 if test "${ac_cv_header_time+set}" = set; then :
Index: configure.ac
===================================================================
--- configure.ac	(revision 297908)
+++ configure.ac	(working copy)
@@ -487,6 +487,7 @@
 AC_TYPE_SIZE_T
 AC_CHECK_MEMBERS([struct stat.st_blksize])
 AC_CHECK_MEMBERS([struct ucred.uid, struct ucred.cr_uid], [], [], [#include <sys/socket.h>])
+AC_CHECK_MEMBERS([struct ifreq.ifr_ifru.ifru_hwaddr], [], [], [#include <net/if.h>])
 AC_HEADER_TIME
 AC_STRUCT_TM
 AC_C_VOLATILE
Index: include/asterisk/autoconfig.h.in
===================================================================
--- include/asterisk/autoconfig.h.in	(revision 297908)
+++ include/asterisk/autoconfig.h.in	(working copy)
@@ -813,6 +813,9 @@
 /* Define to 1 if you have the `strtoq' function. */
 #undef HAVE_STRTOQ
 
+/* Define to 1 if `ifr_ifru.ifru_hwaddr' is a member of `struct ifreq'. */
+#undef HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR
+
 /* Define to 1 if `st_blksize' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
Index: main/netsock.c
===================================================================
--- main/netsock.c	(revision 297908)
+++ main/netsock.c	(working copy)
@@ -234,7 +234,7 @@
 
 void ast_set_default_eid(struct ast_eid *eid)
 {
-#if defined(SIOCGIFHWADDR)
+#if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR)
 	int s, x = 0;
 	char eid_str[20];
 	struct ifreq ifr;