Considering that my home computer has only one connection and it is to my ISP,
why does it need the default gateway to be configured (being DHCP client)?
Where else my connection can be deviated from this unique connection cable?
Is it possible to configure a router to which my PC is connected and, then,
the client PCs would not need to be configured with default gateway?
Or client PCs always have to know default gateway?
Why?