The Spotify client should download the wpad.dat file, where Spotify will get the url for where this file is located by reading the DHCP Option 252 (if exist) when the client is using DHCP. The WPAD.dat contains all ip adresses of the proxy servers and ports to be used and …

WPAD is not designed to find the actual proxy settings, but to find the PAC script which tell the browser which settings to use. DHCP (Dynamic Host Configuration Protocol) Clients using DHCP need to look for an option using the 252 option code. ISC DHCP server doesn’t support this option by default, but it does support adding arbitary disable wpad DNS querys completly Jan 21, 2018 Configuring Web Proxy Automatic Discovery (WPAD) in

Disable WPAD in Windows to Stay Safe on Public Wi-Fi Networks

Windows Autopilot and proxy servers – Out of Office Hours Aug 27, 2019 When domain names attack: the WPAD name collision

DHCP Relay problems - Cisco Community

Clearing the Cached WPAD Script