+
+8. Load optional modules.
+
+If you are using loadable modules for the ppp then you must load them
+after the kernel has been started. The following relative order must
+be maintained.
+
+Sequence Module Description
+ 1 slhc.o VJ header compression
+ 2 ppp.o PPP driver
+ 3 bsd_comp.o BSD compression for PPP's compression protocol.
+
+If you only have the bsd comprssor as a module then you may load it without
+regard to any order. Likewise you may load the deflate compressor without
+regard to any order with the BSD one. The idea is that the ppp.o code must
+be loaded to use the compressor and the VJ header compression code must be
+loaded to use ppp.o.
+
+You may elect not to load the BSD compression module if you desire.
+The LZW compression algorithm (as used by BSD-Compress and the
+`compress' command) is claimed to be covered by a patent held by
+Unisys in the USA and other countries.
+
+In addition, if memory is a premium, do not run the compressors. It
+may take large amounts of memory (up to 2.6 meg) for high compression
+lengths to hold the compression dictionaries.
+
+Without the compression modules, the PPP driver will not accept PPP's
+compression control protocol for that type. If you have no compressors
+loaded then no compression will be performed. If you don't have the BSD
+compressor loaded then the BSD compression will not be performed, even
+if the peer system supports it. Likewise with the deflate compressor.
+
+Compressors are unique to their type. If you have the deflate compressor
+loaded and the peer system has the BSD version, still no compression must
+be loaded. BOTH systems must support the same compression protocols.
+
+
+PROBLEMS WHICH MAY OCCUR WHILE BUILDING THE KERNEL
+
+At this time there should not be a problem with the compilation of the
+drivers.