Not on Router WLAN Client List

[drgkt]

Hi
I have 2 smart plugs one of which is not shown on router wifi client list.
If I restart the router, it shows, then disappears again, however, it is reachable via web interface. If I ping it, it appears on the list BUT with IPv4 address 0.0.0.0, instead of the actual one.
What commands you recommend I issue to see what the difference is between the 2 plugs and why this is happening?

EDIT: Both are under DHCP binding in router settings, so they get the same IP every time.

Thanks

[Jason2866]

Which brand is the router?

[drgkt]

ZTE ZXHN H268N.
But why one of them and not both?

[Jason2866]

Maybe the one is "just" defect.

[drgkt]

Maybe.
Or there are differences in configuration that I need to pinpoint...

[drgkt]

@barbudor
Suggestions?

[barbudor]

When unsure of the actual configuration, I'll do a 'reset 1' to wipe it out and restart from scratch.