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> /*
>  * COFFEE WARE LICENSE - diff for /sys/netinet/raw_ip.c
>  *
>  * IP_HDRINCL protection beta version 1
>  *
>  * Note: This type of protection can be implemented as a loadable kernel
>  *   module... 
>  *
>  * This version requires that you recompile your kernel 
>  * Added options are:
>  *
>  * option IPHDR_MON  -> to monitor IP_HDRINCL
>  * option NO_IPHDR  -> to deny it!
>  *
>  * Important: the second option requires the first!
>  *
>  * A lkm which monitors setsockopt() syscall can be also required to:
>  * deadhead@sikurezza.org or pigpen@s0ftpj.org with Subject:
>  * LKM FOR OpenBSD VERSION X.X    -> where X.XX... is your version
>  *
>  * This diff was tested on a 2.6 kernel 
>  */
>   
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> #ifdef IPHDR_MON 
> #include <sys/syslog.h>
> #endif
> 
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<       else if (*mtod(*m, int *))
---
>       else if (*mtod(*m, int *)) {
> #ifdef  IPHDR_MON
>         log(LOG_INFO,"IP_HDRINCL detected!\n");
> #endif
> 
> #ifdef  NO_IPHDR
>         log(LOG_INFO,"Kernel doesn't permit it!\n");
> 
> /* This if is false in general, I suppose OpenBSD kernel doesn't set IP_HDRINCL 
>    with value = 1 as default (Linux for example does it, see lkm by fusys) */ 
> 
>         if((inp->inp_flags & INP_HDRINCL)) {
>          log(LOG_INFO,"Kernel put it to 1 ");
>          log(LOG_INFO,"IP_HDRINCL disabled!\n");
>           inp->inp_flags &= ~INP_HDRINCL;
>         }
> #else
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<       else
---
> #endif
>       } else