Hi, I'm trying to port a tool from solaris 10 to Fedora 7. While running gcc I get some strange errors. Example app: include <netinet/in.h> int main() { const int segments = 100; inet6_rth_space(IPV6_RTHDR_TYPE_0, segments); return 0; } While running gcc the following output is created: > $ gcc -Wall -o test test.c > test.c: In function ‘main’: > test.c:5: warning: implicit declaration of function ‘inet6_rth_space’ Under solaris it compiles just fine. Does someone know whats wrong? cheers, Stefan