The following was received October 30, 2001 From: "Morten J. Christensen" Re: draft-ietf-magma-snoop It appears that a number of patents have been filed which may apply to this draft or parts thereof. None of these patents have been filed by the authors of this draft or companies in which they are or have been employed. We, the authors, have not tried to evaluate whether these patents are violated by implementing IGMP snooping according to this document. The IETF/IESG have been notified about the existence of the patents. International patent: WO 96/34474, Oct. 31 1996, Title: "Broadcast transmission in a data network" US patent: Number 5,608,726, Mar. 4, 1997 (filed 1995) Title: "Networking Bridge with Multicast forwarding table" US patent: Number 5,898,686, Apr. 27, 1999 (filed 1996) Title: "Networking Bridge with Multicast forwarding table" Australian patent: Application No. 65440/98 Title: "System, Device, and Method for Managing Multicast Group Memberships in a Multicast Network"