@NekkoDroid So there's a programmable rate limit on socket units. If you hit that too often we assume that something is wrong (i.e. that the service in question dies quickly after activation and never can process its connections). Hence, in order to not consume unbounded CPU we will eventually give up trying to activate the service. This safety feature can be seen as a DoS, if there simply are very high amounts of connections, the rate limit is hit too after all, it cannot…