Could you please test the following patch for devel/libnet on various
operating systems?

--- src/libnet_link_snoop.c.orig        2005-03-20 21:53:28.000000000
+0100
+++ src/libnet_link_snoop.c     2005-03-20 21:54:02.000000000 +0100
@@ -38,7 +38,9 @@
 #include <net/raw.h>
 #include <net/if.h>
 
+#if (__linux__)
 #include <netinet/ip_var.h>
+#endif
 #include <netinet/if_ether.h>
 #include <netinet/udp_var.h>
 #include <netinet/tcpip.h>


It is necessary with the IRIX 5 cc because otherwise netinet/ip_var.h
gets included twice (the first time in include/libnet.h).
Other compilers are probably more tolerant, or maybe other OSes guard
against this by appropriate defines.
In any case this patch *should* do no harm on any OS.

Thanks.

Georg 

-- 
Georg Schwarz    http://home.pages.de/~schwarz/
 georg.schwarz@freenet.de     +49 178 8545053