priority
Description:
The relative priority of this connection to determine the system hostname.
A lower numerical value is better (higher priority). A connection with higher priority is considered before connections with lower priority.
If the value is zero, it can be overridden by a global value from NetworkManager configuration. If the property doesn't have a value in the global configuration, the value is assumed to be 100.
Negative values have the special effect of excluding other connections with a greater numerical priority value; so in presence of at least one negative priority, only connections with the lowest priority value will be used to determine the hostname.