Alternatively, edit these files according to the differences shown in
ultrix/patches.
-3. Copy the following files to /sys/io/netif:
+3. Copy the following files to /usr/sys/io/netif:
- net/if_ppp.h
net/ppp-comp.h
net/ppp_defs.h
- net/slcompress.h
ultrix/bsd-comp.c
+ ultrix/ppp-deflate.c
ultrix/if_ppp.c
+ ultrix/if_ppp.h
ultrix/if_pppvar.h
ultrix/ppp_tty.c
ultrix/slcompress.c
+ ultrix/slcompress.h
+ common/zlib.c
+ common/zlib.h
4. Add a line like this to the configuration file for your kernel: