you could do a span or traffic mirror in one of the switches to sniff on the traffic being sent. i just did it on mine and looks like you do get ipv6 neighbor discovery packets, but they also reply to bootp. you should be able to get ipv4 only, at least it works for me.

the s33 is the closest I’ve seen to what im looking for, have you tried to put it through a switch? the g36 seems to lock up every time, wonder if the s33 has the same issue.