Code modified to use the new Range object for Rule

Issue: #43
Signed-off-by: Rossella Sblendido <rossella@midokura.com>
Merge pull request #45 from midokura/rossella/master

Code modified to use the new Range object for Rule
Set MTU size to 65021 when creating TAP interface.

Fixes #590.

Signed-off-by: Brandon Berg <bberg@midokura.com>
Merge pull request #42 from brandon-berg/issue-590

Fixes #590: Set MTU size to 65021 when creating TAP interface.