If IP traffic runs over a LAN Emulation instance, assign a hostname and corresponding IP address to the instance. If you enter a hostname that appears in the /etc/init/hosts or /etc/init/ipnodes file, or if NIS, NIS+, or DNS is enabled and the hostname is resolvable over it, you are not prompted to enter an IP address. Instead, the resolution is performed automatically. If the hostname cannot be resolved, you are prompted to enter an IP address. If you must enter an IP address, or if the address is only available through NIS, NIS+, or DNS, the SunATM software updates both the /etc/init/hosts and /etc/init/ipnodes files.
A valid hostname is no more than 80 characters. A valid IP address is a set of four decimal numbers in the range of 0 to 255, separated by dots (for example, 149.144.130.9). The preferred form of an IPv6 address is x:x:x:x:x:x:x:x, where x represents the hexidecimal value of the eight 16-bit pieces of the address, for example, 1080:0:0:0:8:800:200c:417A.