Internet Protocol version 4 is an addressing and packet-delivery protocol widely used on networks. Home networks often combine IPv4 private addressing with translation for internet access. Its role is separate from account credentials, media codecs or programme permissions, and an application may use IPv4 even when other parts of the same device support IPv6.
A practical example
A router can assign a television a private IPv4 address and translate its outbound connections through the household internet connection. The player still needs the correct service address and account information to retrieve media through that network path.
A common misunderstanding
Seeing a valid IPv4 address confirms only part of network configuration. DNS, routing, service reachability and authorization can still fail after the device obtains an address successfully.
Related terms
Stable technical definition. Editorial approach