SMF IPAM CLI Commandsipam address-poolipam address-pool ipv4 address-rangeipam address-pool ipv4 split-sizeipam address-pool ipv4 thresholdipam address-pool ipv6 address-ranges address-rangeipam address-pool ipv6 address-ranges split-sizeipam address-pool ipv6 address-ranges thresholdipam address-pool ipv6 prefix-ranges prefix-rangeipam address-pool ipv6 prefix-ranges split-sizeipam address-pool ipv6 prefix-ranges thresholdipam dpipam poolipam sourceipam source external ipamipam threshold