ofctl: Add default value to type field of OFPGroupMod

In OF1.2 and OF1.3 Spec, the group type need not be specified
for the group delete request.
However, an error occurs at mod_group_entry in ofctl_v1_[23].py
without specifying group type to delete a group entry.

This patch adds default value to type field of OFPGroupMod
at mod_group_entry in order to reflect OpenFlow Specification.

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
sw test tool: fix an error caused by changing enum name in of1.4

In of1.4 spec, enum name has been changed as follows:

of1.3.4 spec:
     OFPR_NO_MATCH = 0, / * No matching flow (table-miss flow entry). * /

of1.4 spec:
     OFPR_TABLE_MISS = 0, / * No matching flow (table-miss flow entry). * /

Along with this change, AttributeError has occurred in the process of comparison of the received message.
This patch fixes this problem.

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Fix spell check in group feature message Maintain name consistency in meter type in Meter Features message in OF 1.3 Add length field in group statistics reply in OF 1.2

Signed-off-by: Sriram Natarajan <natarajan.sriram@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Improve debug messages for unsupported request Log correct debug message

Signed-off-by: Sriram Natarajan <natarajan.sriram@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
bgp: local preference support IPv6, VPNv4/v6 route family

local preference supports IPv6 and VPNv4/v6 route family.
sorry, previous patch contains pep8 warnings, so I cleaned them.
Please discard previous one.

Signed-off-by: Hiroshi Yokoi <yokoi.hiroshi@po.ntts.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
bgp: ignore link-local address

According to RFC 2545, both a global address and a link-local address
can be sent as a next_hop address in BGPUpdate message.
Since the link-local address is not needed in Ryu BGP,
Ryu BGP ignore it if the address family is IPv6 unicast.

Signed-off-by: Hiroshi Yokoi <yokoi.hiroshi@po.ntts.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>