On mar. 19 sept. 22:32:34 2017, Alexander Demenshin wrote: > Hi, > > Any reason why 240.0.0.0/4+ routes are ignored by bird (1.6.3)? > > I have tried to blackhole this range in static protocol, but got this > message. > > Attempts to manually add any kernel route from this range were silently > ignored.
Hi, Because this range is not aimed to be routed or added to any host, cf. https://tools.ietf.org/html/rfc1112 section 4. You need to be part of a multicast group to use those addresses, as said in https://en.wikipedia.org/wiki/IP_multicast#Routing -- alarig
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