I'm not sure of the reference point for the data, but it seems to me that you need a "ip access-group ACCESS-list in" on the VLAN interface. That is, assuming your VLAN 100 is the VLAN that your endpoint is a member of. The fact that the UDP entries do not show any hits, yet the endpoint received an IP may be an indication of this.
I could be wrong and completely misunderstanding your network, but it's worth a try, IMHO.
I hope this is helpful.