Previously, only one nexthop was recognized. The parsing of the whole file
failed immediately when two or more hops were possible for *any* originator (not
only for one with a router behind it).
This makes the parser ignore most of the line in the originators table.
As I have seen instances of ebtables being killed with a timeout of 100ms,
increasing it to 500ms.
Also, to ease the straint on the CPU, increasing minimum time between TQ checks
to 15 seconds.
This reduces the average CPU consumption (on a WDR4300) from 3% to 1%.
Also, this commit adds error messages when the parsing fails and makes matching
more flexible after all relevant fields have been found.
This package drops all incoming router advertisements except for the
default router with the best metric according to B.A.T.M.A.N. advanced.
Note that advertisements originating from the node itself (for example
via gluon-radvd) are not affected.
