SUMMARY When pinging a website continuously for more than 12 hours, the data get from method 'options' in class dhcp4config is empty STEPS TO REPRODUCE 1. use terminal to ping a web address 2. wait for more than 12 hours (make sure pc will not be in S3 or S4) 3. check the data get from method OBSERVED RESULT the data get from method 'option' of dhcp4config, which is the map class, will be empty. While the data get from network-manager dhcp dbus interface is normal EXPECTED RESULT it should get data normally SOFTWARE/OS VERSIONS networkmanager-qt (=5.115.0) Qt Version: qt 5.15.10