Hi. Without this patch (apply to /usr/include/netinet/if_fddi.h) build net-tools-1.60 failed gcc -D_GNU_SOURCE -O3 -march=pentium4 -mcpu=pentium4 -mmmx -msse -msse2 -mfpmath=sse -I. -idirafter ./include/ -Ilib -I/var/tmp/portage/net-tools-1.60-r9/work/net-tools-1.60 -idirafter /var/tmp/portage/net-tools-1.60-r9/work/net-tools-1.60/include -c -o fddi.o fddi.c In file included from /usr/include/netinet/if_fddi.h:26, from fddi.c:30: /usr/include/linux/if_fddi.h:110: error: field `gen' has incomplete type -- Igor A. Valcov