Please see;
“Bridged” network configurations
There are a number of threads on internet forums which discuss a specific network configuration in which the streamer is directly connected to the server without the use of a switch. These are typically referred to as bridged connections and are claimed to be beneficial for “isolation” of “network noise.”
When configured as described these setups have an impact ranging from nothing to complete inability for the streaming device to function. Due to the way that networks actually work this configuration has no possible way of making a positive impact and should be filed under a rather long list of dubious audiophile tweaks.
dCS does not support these “bridged” or “isolated” connection schemes and will not be able or willing to provide assistance in cases where this connection method is used.