The IESG has received a request from the Operational Security Capabilities for IP Network Infrastructure WG (opsec) to consider the following document: - 'Recommendations on filtering of IPv4 packets containing IPv4 options.' <draft-ietf-opsec-ip-options-filtering-05.txt> as Best Current Practice The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2013-09-30. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document provides advice on the filtering of IPv4 packets based on the IPv4 options they contain. Additionally, it discusses the operational and interoperability implications of dropping packets based on the IP options they contain. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-opsec-ip-options-filtering/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-opsec-ip-options-filtering/ballot/ No IPR declarations have been submitted directly on this I-D.