Active mode: Perform validation testing of newly learned foreign mobility management nodes in dynamic profile table 108$_{;}$ change status of newly learned nodes from graylisted to whitelisted or blacklisted based on results of validation testing; disable dynamic learning of new foreign mobility management nodes; discard messages received from node identities for which entries are provisioned in static profile table 106 or dynamic profile table 108 where the rule indicates that the status is blacklisted; forward messages received from node identities for which entries are provisioned in static profile table 106 or dynamic profile table 108 where the rule indicates that the status is whitelisted or graylisted. 

management nodes; keep the status of newly learned nodes as graylisted; continue to forward all traffic from newly learned nodes regardless of whether status of node is blacklisted, whitelisted, or graylisted; 

Providing a routing node with the capability of operating in the above- described modes enables network operators to dynamically learn the identities of during repeated validation testing. 

According to another aspect of the subject matter described herein, dynamically learned foreign mobility management node identities may not be whitelisted or blacklisted based on single validation test results. Rather, validation tests are repeatedly performed as traffic is received from the nodes and successful and unsuccessful validation test results are counted. Thresholds are defined for unsuccessful and successful validation test results. According to one aspect of the subject matter described herein, a network operator may configure the following thresholds in routing node 100$_{,}$ and routing node 100 may use the thresholds to determine when a foreign mobility 

