Tools for editing PCAP files

I wrote a new command line tool to rebase PCAP files and edit their layer2 and layer3 addresses. This tool is smart enough to edit corresponding ARP packets and understands 802.1Q tagged frames and Q-in-Q double tagged frames.  It should easily compile with Go v1.4 on MacOSX and Linux (it may also compile on Windows though I can not test that). You can get it on GitHub at: https://github.com/jordan2175/rewritecap