--- nono/configure.ac	2026/04/29 17:04:51	1.1.1.7
+++ nono/configure.ac	2026/04/29 17:04:53	1.1.1.8
@@ -385,30 +385,54 @@ AC_TRY_COMPILE(
 		AC_DEFINE([HAVE_ICONV_CONST]),
 	AC_MSG_RESULT([no]))
 
-# Select host network driver.
-AC_MSG_CHECKING(for suitable host network driver)
+#
+# Network
+#
+AC_MSG_CHECKING(for AF_PACKET)
+AC_TRY_COMPILE(
+	[
+		#include <sys/socket.h>
+	], [
+		AF_PACKET;
+	],
+	AC_MSG_RESULT([yes])
+		AC_DEFINE([HAVE_HOSTNET_AFPACKET])
+		AC_SUBST([HOSTNET_AFPACKET], [yes]),
+	AC_MSG_RESULT([no]))
+
+AC_MSG_CHECKING(for tap(4))
 case "${host_os}" in
  linux*)
 	if test x"$ac_cv_header_linux_if_tun_h" = xyes; then
-		netdriver=tap
+		netdriver_tap=yes
 	fi
 	;;
  openbsd*)
 	# OpenBSD has no <net/if_tap.h> but supports tap(4).
-	netdriver=tap
+	netdriver_tap=yes
 	;;
-esac
-if test -z "$netdriver"; then
+ *)
 	if test x"$ac_cv_header_net_if_tap_h" = xyes; then
-		netdriver=tap
-	elif test x"$ac_cv_header_net_bpf_h" = xyes; then
-		netdriver=bpf
-	else
-		netdriver=none
+		netdriver_tap=yes
 	fi
+	;;
+esac
+if test x"$netdriver_tap" = xyes; then
+	AC_MSG_RESULT([yes])
+	AC_DEFINE([HAVE_HOSTNET_TAP])
+	AC_SUBST([HOSTNET_TAP], [yes])
+else
+	AC_MSG_RESULT([no])
+fi
+
+AC_MSG_CHECKING(for bpf(4))
+if test x"$ac_cv_header_net_bpf_h" = xyes; then
+	AC_MSG_RESULT([yes])
+	AC_DEFINE([HAVE_HOSTNET_BPF])
+	AC_SUBST([HOSTNET_BPF], [yes])
+else
+	AC_MSG_RESULT([no])
 fi
-AC_MSG_RESULT([$netdriver])
-AC_SUBST([NETDRIVER], [$netdriver])
 
 # libbsd on Linux
 AC_CHECK_LIB(c, getprogname, ,)