This update update for shorewall fixes the following issues:

- Update shorewall to the 4.6.13.4 bugfix release (boo#989281)

This includes the following upstream changes:

- The DROP command was previously rejected in the mangle file.
- Rules in which the SOURCE contained both an interface name and a MAC address would be rejected.
- Optional interfaces were not enabled during 'start' and 'restart' unless there was at least one entry in the 'providers' file.

- Use 'netstat' to print socket information when the 'ss' utility is not installed
- Correctly delete default route in the main table if statistical load balancing was used in the providers file
- No longer fail the 'reset' command if chain names were included
- The TCP meta-connection is now supported by the Tinc macro and tunnel type