On ethernet gateway send() returns true without controller connected/ no ethernet link at all.

When send()ing initial values early in loop() in case of  controller not connected
or even ethernet cable not plugged in, messages are sent and lost but send() returns true.

I would expect when link to controller is not established, send() should return false.

MySensors 2.3.2 and MY_GATEWAY_W5100 Ethernet 2.0 

HW: Nano + W5500
