Type,Configuration Option,Reference
1,IP-Addresses (deprecated),[RFC1332]
2,IP-Compression-Protocol,[RFC1332]
3,IP-Address,[RFC1332]
4,Mobile-IPv4,[RFC2290]
5-128,Unassigned,
129,Primary DNS Server Address,[RFC1877]
130,Primary NBNS Server Address,[RFC1877]
131,Secondary DNS Server Address,[RFC1877]
132,Secondary NBNS Server Address,[RFC1877]