Check for RTA_TABLE in configure.

configure.in

@@ -459,6 +459,17 @@ AC_TRY_COMPILE(
 	[AC_MSG_RESULT([no])]
 )
 
+AC_MSG_CHECKING([for RTA_TABLE])
+AC_TRY_COMPILE(
+	[#include <sys/socket.h>
+	#include <linux/netlink.h>
+	#include <linux/rtnetlink.h>],
+	[int rta_type = RTA_TABLE;
+	 return rta_type;],
+	[AC_MSG_RESULT([yes]); AC_DEFINE([HAVE_RTA_TABLE])],
+	[AC_MSG_RESULT([no])]
+)
+
 AC_MSG_CHECKING([for gcc atomic operations])
 AC_TRY_RUN(
 [

src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c

@@ -933,12 +933,14 @@ static host_t *get_route(private_kernel_netlink_net_t *this, host_t *dest,
 								rta_oif = *(u_int32_t*)RTA_DATA(rta);
 							}
 							break;
+#ifdef HAVE_RTA_TABLE
 						case RTA_TABLE:
 							if (RTA_PAYLOAD(rta) == sizeof(rta_table))
 							{
 								rta_table = *(u_int32_t*)RTA_DATA(rta);
 							}
 							break;
+#endif /* HAVE_RTA_TABLE*/
 					}
 					rta = RTA_NEXT(rta, rtasize);
 				}