As a quick test, turn the laser off and try pinging it again. If anything replies, the router has assigned the laser’s IP address through DHCP to another device, in which case you must fix that.
This discussion has plenty of gory details:
As a quick test, turn the laser off and try pinging it again. If anything replies, the router has assigned the laser’s IP address through DHCP to another device, in which case you must fix that.
This discussion has plenty of gory details: