network/vxlan: add support for IPv6

Support for VxLAN over IPv6 was added in Linux 3.12

* run tests with'-6' parameter
* add two VxLAN configurations: with unicast and multicast
  destination address; it can be configured through '-d' parameter

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
2 files changed