A device can receive, at a user plane function (UPF), a set of rules for managing a communications session. The set of rules can include a set of mobility management rules and a set of packet processing rules. The device can store the set of mobility management rules and the set of packet processing rules at the UPF. At a control plane of the UPF, the device can perform an analysis of a flow of one or more packets transmitted during the communications session. At run-time, and based on the analysis, the device can generate a modified set of packet processing rules from the stored set of packet processing rules. The device can receive a packet of the flow, apply the modified set of packet processing rules to the received packet, and forward the received packet and update the modified set of packet processing rules.