The index of the AALL IP prefix access list to use for route imports from the peer group for this AFI/SAFI. Route import policy applies any import IP prefix access list before any import route map, and the route must be permitted by both to be imported. The import route map can apply its own prefix lists in addition to any import IP prefix access list. Route import uses a single import IP prefix access list - see the description of the bgpPeerAfiSafiImportIpAallPre field for details. This field is used for dynamic and configured peers. For a description of how this field is used for the latter, see the description of bgpPeerTable. In addition this field is also used where the peer's configured AALL IP prefix access list index is zero.