controller port visualized uncorrectly into ONOS CLI

When typing "flows" in the ONOS CLI, the controller port is shown as following (do not consider in the output below the Ethernet type - which is clearly wrong):
onos> flows
deviceId=of:5e3e486e73000187, flowRuleCount=3
id=10000da2e116d, state=ADDED, bytes=0, packets=-1, duration=546, priority=40000, appId=org.onosproject.net.proxyarp
selector=[ETH_TYPE

{ethType=806}

]
treatment=[OUTPUT

{port=18446744073709551613}]
id=20000da1ea967, state=ADDED, bytes=0, packets=-1, duration=546, priority=40000, appId=org.onosproject.provider.lldp
selector=[ETH_TYPE{ethType=ffffffffffff88cc}]
treatment=[OUTPUT{port=18446744073709551613}

]
id=20000da1eb7b1, state=ADDED, bytes=0, packets=-1, duration=546, priority=40000, appId=org.onosproject.provider.lldp
selector=[ETH_TYPE

{ethType=ffffffffffff8942}

]
treatment=[OUTPUT

{port=18446744073709551613}

]

We need to translate this number into something like "to controller".
This is just for cosmetic. The port number is anyway "correct" on the switches.