IP configuration restarts itself

Hi,
Is there any rule when the robot restarts its configuration of IP to 0.0.0.0?
I left robot overnight to collect some data with IP set to 192.168.0.85 but it restarts itself after few minutes to 0.0.0.0 and I didn’t collect any data :frowning: Is there any rule? Is it a bug? or I’m just doing sth wrong?