Indicates whether this interface is a stub interface in
relation to DVMRP. If this object is set to 'true', no DVMRP
packets are sent out this interface, and any received DVMRP
packets are ignored.
Setting this object to 'true' is a security measure for
interfaces towards untrusted hosts. To communicate with other
DVMRP routers using this interface, this object must remain set
to 'false'.
Changing the value of this object while the interface is
operationally active MAY cause the interface to be deactivated
and then reactivated.