>I have a 1.4U box and was looking into compiling IPSEC into the kernel. So 
>i go out and cvs the
>old source from 2000-03-15 and attempt to build the kernel and get this error.

	if you are using source code tree prior to June 2000, you need to
	follow the instruction presented below:
	http://www.netbsd.org/Documentation/network/ipsec/index.html#getting_started
	(see the bullet starts with with "Before June 2000...")

itojun