The title says it all but some context here. We have a jtac case open and they are not able to reproduce the behavior in their lab yet.
We have 2 of these boxes doing this. When a unicast dhcprequest or dhcpack traverses any vlan on the box, its forwards that traffic out all interfaces where vstp is forwarding for the vlan even though traffic captures from switches linked to the 10k's which receive the traffic show that the traffic is l2 unicast.
Code on 1 is 20.2R2-S3 and the other is base 20.2R2.
Neither I nor JTAC can see anything in the config that would cause this....but I did find one thing I"m not sure about. Under the vstp config stanza, I'm using an interface range, which in looking at this doc doesn't seem like it's officially supported on the qfx, or that's my interpretation of it, as for the ex line it seems to specifically list vstp. So I tried a port outside of the range. Flooding still occurs:
Has anyone ever heard of such a thing?Not sure at this point what parts of sanitized configs should be posted, etc but would appreciate any insight.