To address the limitations of the IPv4 address space the Internet community needs to adopt variant technologies until IPv6 can be deployed giving the Internet a new address space.  Three such technologies are Network Address Translation (NAT), Link Tunnel Protocols like L2TP, and the use of address translation in Firwall products.  This BOF would like to investigate and discover if there is valid work to do, which can be used to assist this IPv4 problem thru the Avoidance of Network Address Translation on Networks (AATN).  This work would address todays need for IPv4 and some of the needs for IPv6 which are not addressed by the existing NGTRANS WG.  Because this work includes work specific just to IPv4 it should not be part of NGTRANS, but there will be some overlap clearly.  Engineers in our community have begun to work on AATN in various manners and from several IETF WG mail lists this work appears to have a growing interest.  This is also not part of the NAT work on going as that function is to define and specifiy parts to do NAT.  One objective of this work is to provide and insure that end-to-end host connectivity is supported for mobility and IPSEC, without network address translation.