A method performed in an Interaction Gateway, IGW, located between a Packet Data Network, PDN, and a user plane gateway of a communication network used by a service client for service level communication with a service provider , in which communication network there is a first and a second communication bearer between a radio device , comprising the service client, and the user plane gateway via a Radio Access Network, RAN, where the second communication bearer is associated with the service level communication, for establishing a first interaction session on the second communication bearer between the IGW and the service client for controlling the service level communication, and for establishing a second interaction session between the IGW and the RAN , the method comprising: obtaining (S1) an initialization message addressed to the IGW by means of default IGW address information via the first bearer , for initiating the first interaction session , the initialization message comprising service level address information used for the service level communication ; determining (S2) first dedicated IGW address information for the first interaction session and second dedicated IGW address information for the second interaction session ; initiating (S3) sending of a confirmation message comprising the determined (S2) first dedicated IGW address information to the service client ; and ensuring (S4) that the first interaction session , using the first dedicated IGW address information , and the second interaction session , using the second dedicated IGW address information , are associated with the second communication bearer wherein the ensuring comprises initiating sending a message comprising the determined first dedicated IGW address information as well as the service level address information to a Policy and Charging Rules Function, PCRF, or to an Application Function, AF, for initiating setting up of a filter, e.g. a Traffic Flow Template, TFT, in the radio device and/or in a Core Network, CN, of the communication network for mapping IP data packets associated with the determined first dedicated IGW address information to the second communication bearer . obtaining (S1) an initialization message addressed to the IGW by means of default IGW address information via the first bearer , for initiating the first interaction session , the initialization message comprising service level address information used for the service level communication ; determining (S2) first dedicated IGW address information for the first interaction session and second dedicated IGW address information for the second interaction session ; initiating (S3) sending of a confirmation message comprising the determined (S2) first dedicated IGW address information to the service client ; and ensuring (S4) that the first interaction session , using the first dedicated IGW address information , and the second interaction session , using the second dedicated IGW address information , are associated with the second communication bearer wherein the ensuring comprises initiating sending a message comprising the determined first dedicated IGW address information as well as the service level address information to a Policy and Charging Rules Function, PCRF, or to an Application Function, AF, for initiating setting up of a filter, e.g. a Traffic Flow Template, TFT, in the radio device and/or in a Core Network, CN, of the communication network for mapping IP data packets associated with the determined first dedicated IGW address information to the second communication bearer . <EOS>