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To build a kernel for use with the loadable kernel module, follow these
steps:
1. do "make netbsd"
2. do "make install-bsd"
(probably has to be done as root)
3(a) NetBSD systems prior to 1.2:
run "NetBSD/minstall" as root
3(b) NetBSD 1.2 systems or later:
run "NetBSD-1.2/minstall" as root
4. build a new kernel
5. install and reboot with the new kernel
6. use modload(8) to load the packet filter with:
modload if_ipl.o
7. do "modstat" to confirm that it has been loaded successfully.
There is no need to use mknod to create the device in /dev;
- upon loading the module, it will create itself with the correct values,
under the name (IPL_NAME) from the Makefile. It will also remove itself
from /dev when it is modunload'd.
To build a kernel with the IP filter, follow these steps:
1. do "make netbsd"
2. do "make install-bsd"
(probably has to be done as root)
3(a) NetBSD systems prior to 1.2:
run "NetBSD/kinstall" as root
3(b) NetBSD 1.2 systems or later:
run "NetBSD-1.2/kinstall" as root
3(c) If conf.c fails on the 2nd hunk of the patch, you will have to
manually apply the patch.
4. build a new kernel
5. Create device files. For NetBSD-1.2 (or later), use 49 as the
major number. For NetBSD-1.1 or earlier, use 59. Run these
commands as root, substituting <major> for the appropriate number:
mknod /dev/ipl c <major> 0
mknod /dev/ipnat c <major> 1
mknod /dev/ipstate c <major> 2
mknod /dev/ipauth c <major> 3
** NOTE: both the numbers 49 and 59 should be substituted with
whatever number you inserted it into conf.c as.
6. install and reboot with the new kernel
Darren Reed
darrenr@pobox.com