It is possible for hosts to obtain address information using both
stateless and stateful protocols since both may be enabled at the
same time. It is also possible that the values of other
configuration parameters such as MTU size and hop limit will be
learned from both Router Advertisements and the stateful
autoconfiguration protocol. If the same configuration
information is
provided by multiple sources, the value of this information should
be
consistent. However, it is not considered a fatal error if
information received from multiple sources is inconsistent.
Hosts accept the union of all information received via the stateless and
stateful protocols.
If inconsistent information is learned different sources, the most recently obtained values always have precedence over information learned earlier.
