[Scanner only] Scanner shall be able to maintain an ExclusiveOwner and ListenOnly connection to one single target

The scanner (originator of the connections) shall be able to maintain an ExclusiveOwner and ListenOnly connection to one single target

If the connections are configured to be multicast in the T2O direction, in that case the target only sends one IO frame addressing the corresponding muticast IP address.

The scanner in that case has to retrigger the receive timeout timer of both connnections upon reception of that single frame. Currently, one received frame only retriggers exactly one timeout timer of one connection.