What protocol used when two host has same ip address?

When two hosts have the same IP address on a network, it can lead to an IP address conflict, causing connectivity issues for both devices. The Address Resolution Protocol (ARP) is often involved in detecting these conflicts, as it maps IP addresses to MAC addresses. Network administrators typically resolve the conflict by reconfiguring one of the devices to use a unique IP address. Additionally, Dynamic Host Configuration Protocol (DHCP) can help prevent such conflicts by dynamically assigning unique IP addresses to devices on a network.