frequent advertisements when only a few mobile routers exist can be a waste of radio
bandwidth. Thus, it is better to let the mobile routers solicit for advertisements when they need
them.
Regardless of the configured periodic solicitation interval, the mobile router always sends a
solicitation when an interface transitions to the up state. This allows fast agent discovery as a
link comes up by not waiting for an advertisement from the FA. Unfortunately, many radio
devices keep their fixed interface up, even when the radio link is down, to allow IP-based
management of the device. When possible, this should be disabled to improve ...
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