Guest IPv6 odds and ends #905
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needed for ndp solicitations on opte devices to use multicast dmacs instead of broadcast dmacs?
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Addressing guest IPv6 issues as I come across them in e2e testing
mc_multicst(9e). This is required for omicron probes setting up addresses directly on opte devices. TheNeighborAdvertisementHairpinActionexpects multicast macs. But withoutmc_multicst(9e)plumbed, multicast macs will fall back to broadcast macs, theHairpinActionpredicates will fail and ndp will go nowhere in the probe zone.