$NetBSD: patch-af,v 1.8 2013/07/31 06:53:21 adam Exp $

--- configure.orig	2013-05-31 12:00:58.000000000 +0000
+++ configure
@@ -2405,6 +2405,63 @@ rm -f conftest.val
 
 } # ac_fn_c_compute_int
 
+# ac_fn_c_check_member LINENO AGGR MEMBER ax_cv_socklen_t_equiv INCLUDES
+# ----------------------------------------------------------------------
+# Tries to find if the field MEMBER exists in type AGGR, after including
+# INCLUDES, setting cache variable VAR accordingly.
+ac_fn_c_check_member ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2.$3" >&5
+$as_echo_n "checking for $2.$3... " >&6; }
+if eval \${$4+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main ()
+{
+static $2 ac_aggr;
+if (ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$4=yes"
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$5
+int
+main ()
+{
+static $2 ac_aggr;
+if (sizeof ac_aggr.$3)
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$4=yes"
+else
+  eval "$4=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$4
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_member
+
 # ac_fn_c_check_decl LINENO SYMBOL ax_cv_socklen_t_equiv INCLUDES
 # ---------------------------------------------------------------
 # Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
@@ -14182,6 +14239,7 @@ for ac_header in  \
 	sys/mman.h sys/file.h sys/wait.h \
 	unistd.h signal.h libgen.h stropts.h \
 	syslog.h pwd.h grp.h \
+	net/if_tap.h \
 	sys/sockio.h sys/uio.h linux/sockios.h \
 	linux/types.h sys/poll.h sys/epoll.h err.h \
 
@@ -14208,6 +14266,9 @@ SOCKET_INCLUDES="
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
@@ -14305,6 +14366,15 @@ $as_echo "#define HAVE_IN_PKTINFO 1" >>c
 
 fi
 
+ac_fn_c_check_member "$LINENO" "struct in_pktinfo" "ipi_spec_dst" "ac_cv_member_struct_in_pktinfo_ipi_spec_dst" "${SOCKET_INCLUDES}
+
+"
+if test "x$ac_cv_member_struct_in_pktinfo_ipi_spec_dst" = xyes; then :
+
+$as_echo "#define HAVE_IPI_SPEC_DST 1" >>confdefs.h
+
+fi
+
 ac_fn_c_check_type "$LINENO" "struct sockaddr_in6" "ac_cv_type_struct_sockaddr_in6" "${SOCKET_INCLUDES}
 
 "