Hi!

  /usr/toolchain-i386/bin/i386--netbsdelf-gcc      -ffreestanding
  -O2 -pipe -Werror -Wall -Wno-main
  -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes
  -Wstrict-prototypes -Wno-sign-compare  -Di386 -I.  -I../../../../arch
  -I../../../.. -nostdinc -DUCONSOLE -DNMBCLUSTERS="0x4000"
  -DMSGMNB="0x4000" -DMSGMNI="0x29" -DMSGSEG="0x801" -DMSGSSZ="0x40"
  -DMSGTQL="0x200" -DLKM -DAHC_ALLOW_MEMIO -DMAXUSERS=32 -D_KERNEL
  -D_KERNEL_OPT   -c ../../../../net/slcompress.c
  --- if_stf.o ---
  ../../../../net/if_stf.c: In function `stf_checkaddr4':
  ../../../../net/if_stf.c:525: error: `in_ifaddr' undeclared (first use
  in this function)
  ../../../../net/if_stf.c:525: error: (Each undeclared identifier is
  reported only once
  ../../../../net/if_stf.c:525: error: for each function it appears in.)
  *** [if_stf.o] Error code 1
  1 error

... maybe due to (missing) changes in/from

  http://mail-index.netbsd.org/source-changes/2003/11/11/0033.html

??

Markus.