trema/trema-edge — pull request #92 by iHiroakiKawai (2014-02-07 16:54:15+00:00)
Title: Fix PBB_ISID bugs

As of openflow 1.3.3 spec:
- data length of the OXM TLV
- `OXM_OF_IPV6_FLABEL` 20bits is 4bytes
- `OXM_OF_MPLS_LABEL` 20bits is 4bytes
- `OXM_OF_PBB_ISID` 24bits is 3bytes