diff -up dhcp-4.0.0//client/dhclient.c.selinux dhcp-4.0.0//client/dhclient.c
--- dhcp-4.0.0//client/dhclient.c.selinux	2008-05-16 13:42:18.000000000 -1000
+++ dhcp-4.0.0//client/dhclient.c	2008-05-16 13:57:54.000000000 -1000
@@ -2908,6 +2908,11 @@ void rewrite_client_leases ()
 		return;
 	}
 
+	if (fcntl(leaseFile, F_SETFD, FD_CLOEXEC) == -1) {
+		log_error ("failed to set close-on-exec for %s", path_dhclient_db);
+		return;
+	}
+
 	/* If there is a default duid, write it out. */
 	if (default_duid.len != 0)
 		write_duid(&default_duid);
@@ -3011,6 +3016,10 @@ write_duid(struct data_string *duid)
 			log_error("can't create %s: %m", path_dhclient_db);
 			return ISC_R_IOERROR;
 		}
+		if (fcntl(leaseFile, F_SETFD, FD_CLOEXEC) == -1) {
+			log_error ("failed to set close-on-exec for %s", path_dhclient_db);
+			return ISC_R_IOERROR;
+		}
 	}
 
 	/* It would make more sense to write this as a hex string,
@@ -3058,6 +3067,10 @@ write_client6_lease(struct client_state 
 			log_error("can't create %s: %m", path_dhclient_db);
 			return ISC_R_IOERROR;
 		}
+		if (fcntl(leaseFile, F_SETFD, FD_CLOEXEC) == -1) {
+			log_error ("failed to set close-on-exec for %s", path_dhclient_db);
+			return ISC_R_IOERROR;
+		}
 	}
 
 	stat = fprintf(leaseFile, "lease6 {\n");
@@ -3161,6 +3174,10 @@ int write_client_lease (client, lease, r
 			log_error ("can't create %s: %m", path_dhclient_db);
 			return 0;
 		}
+		if (fcntl(leaseFile, F_SETFD, FD_CLOEXEC) == -1) {
+			log_error ("failed to set close-on-exec for %s", path_dhclient_db);
+			return ISC_R_IOERROR;
+		}
 	}
 
 	errno = 0;