tap devices and DHCP.

Hi guys.

I do not know if it's meant to be that way but tap devices cannot get IPs assigned with DHCP.
I did not check the old dhclient code but the new one cannot hand over DHCP requests to tap devices.
I was sure a tap device acted as an ethernet device even though it's a virtual one, since one can manually assign IP to tap.
It can however assign IP to a bridge (with DHCP) with dev tap as a member of it.
Could someone explain me please if this behaviour is on purpose or just a problem with DHCP?

Cheers,
Marcin.