WOL switch not working in 42.2

[mikenolet]

Make sure you are running the latest version of Home Assistant before reporting an issue.

You should only file an issue if you found a bug. Feature and enhancement requests should go in the Feature Requests section of our community forum:

Home Assistant release (hass --version):

42.2
Python release (python3 --version):
python 3.5

Component/platform:

WOL
Description of problem:
device no longer is controlled via the HA WOL switch

Expected:
Device control when switch is toggled

Problem-relevant configuration.yaml entries and steps to reproduce:

1. Toggle switch
2. No response from end device.

Traceback (if applicable):

Additional info:

No error entry showing in log.

[Zendio]

Up until recently Wake on Lan (the switch) worked perfectly, powering on my computer every single time.
After upgrading to the latest HA version (0.42.2) it's gotten wonky. The switch DOES work after restarting HA, but after a while, it no longer does what it's supposed to, despite showing the Turn On toast.

My computers mac address hasn't changed, nor my configuration. In fact, when I'm using any other tool, like wake on LAN from my phone, it works perfectly, while the WOL switch in HA fails.

The error log doesn't show anything related to the problem, but only that it's taking over 10 seconds to load certain components.

Restarting HA fixes the problem, but only briefly.
HA does recognize that my computer has turned on and is pingable. Same for when it goes offline.

[aneisch]

#6532 is the latest commit in which the WOL switch seems to be functioning.

[Zendio]

0.42.3 has not fixed the issue yet.

[Paul-Vdp]

Same here :-( (AIO installation on RPI)

[kennymnk]

Same here, worked before, mac address and configuration haven't changed.

v.0.42.3

[titilambert]

Same here: pretty sure that #6810 is the problem

[titilambert]

Hello guys, I just made a patch to fix this issue. Could you test it ? #7144 Thanks !