iptunnel implementation
Add support for IPv4 routes and PBR resources.
Merge pull request #30 from ndenev/master

Add support for IPv4 routes and PBR resources.
Merge pull request #29 from atopuzov/master

Wrong serialization of the payload
Merge branch 'master' of https://github.com/favoretti/nsnitro
Fix: get_sysname function definition
Add: NSIPTunnel