IP Address Diversity
IP address diversity is a security metric that measures the distribution of peer connections across different network locations and service providers. By ensuring that a node's peers are not all originating from the same IP subnet, the network reduces the risk of coordinated attacks originating from a single point of failure or malicious actor.
High diversity makes it significantly harder for an attacker to eclipse a node, as they would need to compromise infrastructure across multiple autonomous systems. This concept is fundamental to maintaining the decentralization of the P2P layer.
Protocols often enforce limits on how many connections can be accepted from a single IP range to prevent spam and Sybil-style network flooding. Maintaining a diverse set of connections is a proactive defense against censorship and regional network partitions.
It reinforces the global, permissionless nature of cryptocurrency networks by preventing geographic or ISP-level biases in node connectivity.