The use of the Configuration Option IP-Addresses has been deprecated. It has been determined through implementation experience that it is difficult to ensure negotiation convergence in all cases using this option. RFC 1172  provides information for implementations requiring backwards compatability. The IP- Address Configuration Option replaces this option, and its use is preferred.
This option SHOULD NOT be sent in a Configure-Request if a Configure-Request has been received which includes either an IP- Addresses or IP-Address option. This option MAY be sent if a Configure-Reject is received for the IP-Address option, or a Configure-Nak is received with an IP-Addresses option as an appended option.
Support for this option MAY be removed after the IPCP protocol status advances to Internet Draft Standard.