diff -ru ipvsadm-1.21/Makefile ipvsadm-1.21.udp_unconn/Makefile
--- ipvsadm-1.21/Makefile	2004-01-10 18:38:07.000000000 +0900
+++ ipvsadm-1.21.udp_unconn/Makefile	2004-03-01 12:17:56.000000000 +0900
@@ -38,7 +38,8 @@
 INIT    = $(BUILD_ROOT)/etc/rc.d/init.d
 MKDIR   = mkdir
 INSTALL = install
-INCLUDE = -I/usr/src/linux/include -I.. -I.
+KERNELSOURCE = /usr/src/linux
+INCLUDE = -I$(KERNELSOURCE)/include -I.. -I.
 STATIC_LIBS = libipvs/libipvs.a