Add support to proxyarp
Update shorewall.conf default to 4.6.4.3
Add shorewall6.conf
Allow to set multiple protocols separated by comma
Add BLACKLIST supports
Ensure rules are in 'SECTION NEW'
Merge pull request #8 from sileht/master

I'm going to merge this. i've checked it out and tried it in a few places and everything seems in order. I'd also like to use the augeas changes, too but that commit hasn't been included in this request.