Re: wifi: NetworkManager spams the logs with "state changed new lease" every minute

On 2026-06-28 12:20:38 +0200, Vincent Lefevre wrote:
> Under Debian/unstable, with a wifi connection from the train,
> NetworkManager spams the logs with "state changed new lease"
> regularly every minute: what is the cause?
> 
> Jun 28 11:57:41 qaa NetworkManager[1264]: <info>  [1782640661.4715] dhcp4 (wlp0s20f3): state changed new lease, address=10.7.0.171
> Jun 28 11:58:41 qaa NetworkManager[1264]: <info>  [1782640721.4779] dhcp4 (wlp0s20f3): state changed new lease, address=10.7.0.171
[...]

The Mistral AI chatbot pointed me to an explanation and the command
"ip addr show wlp0s20f3" to check the valid_lft value.

I could see that the initial values are

       valid_lft 120sec preferred_lft 120sec

and when this value reaches 60sec, the lease is renewed.

So, it seems to be an issue with SNCF's DHCP server, which uses
an incredibly low value!

I suppose that a renewal of the lease enough time before the end
of its validity is expected.