This started with a simple task, send an ICMP package of type 8 and code 0 to a host in my network. Since I use my Mac for everything I installed nemesis using macports and tried the following command.
sudo nemesis icmp -i 8 -c 0 -P ./payload -D 172.16.148.133
This resulted in an error.
ERROR: Incomplete packet injection. Only wrote -1 bytes. ICMP Injection Failure
And ever since then I have not been able to use nemesis icmp at all from two known good mac computers, I always get this same exact error.
So my response when I noticed this was to simply compile it on a FreeBSD 8.2 system from ports, nemesis 1.4 build 26, same as on OS X.
Works just as it should, no errors, happy user. :)
But I don't want to login to a FreeBSD system everytime I want to use nemesis so what's wrong here? I've tried compiling nemesis 1.4 build 26 from the source code on sourceforge, linking to the libnet installed by macports in /opt, but it did not make a difference.
Note: I've tried running this nemesis command on both systems using a root terminal, not just through sudo that is.