Chaffing
The practice of purposely sending false signals between nodes on a network using fake IP addresses so that they only see information that has already been seen by another node or set of nodes before, thus making consensus impossible for any new data being added onto the chain; this works against 51% attacks where attackers try to introduce invalid blocks into the chain since other miners will not recognise these blocks because they cannot make sense out of what they are seeing due to chaffing.