The value of vRtrIfInitDelayEnable specifies whether vRtrIfDelaySeconds
is used only the next time or everytime the system attempts to bring
the interface operationally up.
The value of vRtrIfInitDelayEnable is ignored if the value of
vRtrIfDelaySeconds is set to 0.
The value of vRtrIfInitDelayEnable is only set when interface is of
type subscriber-interface.
When the value vRtrIfInitDelayEnable is set to 'false', everytime
the system attempts to bring the interface operationally up,
it will be delayed by the value of vRtrIfDelaySeconds.
When the value vRtrIfInitDelayEnable is set to 'true', only the next
time the system attempts to bring the interface operationally up,
it will be delayed by the value of vRtrIfDelaySeconds.