X440-G2 will not forward mac address info , over shared 10gig port , to X670 running mlag.
I have a very basic configuration , from an X440-g2 licenced to use the 10Gig ports ( shared ) connected to 2 x 670 units running mlag , the x440 share is basic L2 and is static ( no lacp ) So the voice vlan is tagged at both the x440 and the 2 X67...