Run miniloops to ensure rules are added

Since we're not using iptables-restore for atomicity, attempts to add rules simultaneously can collide across VIPs.
Merge pull request #27 from Apsu/master

Run miniloops to ensure rules are added
Try proxy_arp on loopback
Remove loopback proxy_arp; enable/trigger gratarps on VIP add
Merge pull request #28 from Apsu/master

Enable/trigger gratarps on VIP add
Fix default route on interface cycling
Gratarp in global namespace for VIPs