A method for detection of network address spoofing and false positive avoidance in a network is described herein. The network may include one or more hosts and a network management system. The network management system may identify a suspicious host in the network. A condition indicative of network address spoofing by the suspicious host may be detected. It may be determined whether the spoofing condition is expected in normal traffic of the network. In response to a determination that the spoofing condition is expected, it is determined that the suspicious host generated normal traffic.