The IESG has received a request from the Operational Security Capabilities for IP Network Infrastructure WG (opsec) to consider the following document: - 'Virtual Private Network (VPN) traffic leakages in dual-stack hosts/ networks' <draft-ietf-opsec-vpn-leakages-02.txt> as Informational RFC 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 2013-12-16. 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 The subtle way in which the IPv6 and IPv4 protocols co-exist in typical networks, together with the lack of proper IPv6 support in popular Virtual Private Network (VPN) products, may inadvertently result in VPN traffic leaks. That is, traffic meant to be transferred over a VPN connection may leak out of such connection and be transferred in the clear from the local network to the final destination. This document discusses some scenarios in which such VPN leakages may occur, either as a side effect of enabling IPv6 on a local network, or as a result of a deliberate attack from a local attacker. Additionally, it discusses possible mitigations for the aforementioned issue. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-opsec-vpn-leakages/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-opsec-vpn-leakages/ballot/ No IPR declarations have been submitted directly on this I-D.
