RPC_SEND_BARRIER_DATA = '''
/inv:nodes/inv:node[inv:id="openflow:1"]
'''
RPC_SEND_ECHO_DATA = '''
/inv:nodes/inv:node[inv:id="openflow:1"]
aGVsbG8gYmFzZSA2NC4gaW5wdXQ=
'''
RPC_SEND_UPDATE_TABLE_DATA = '''
/inv:nodes/inv:node[inv:id="openflow:1"]
0
table 0 - dummy name
21
22
55
DEPRECATED-MASK
'''