A method and system for flow mobility filter rule verification is provided. According to an embodiment of the present invention, a network node of a telecommunications packet network is configured to receive filter rules provided by a user entity (UE) relating to a requested IP-CAN session. The filter rules are applied by a Policy and Charging Control (PCC) network architecture for the session. The network node is also configured to compare received filter rules with Inter-Mobility Policies (IMPs) of the user in order to determine if the filter rules match with the user's IMPs, and to send a filter rule verification response indicating whether or not the filter rules match the user's IMPs.