[ Apologies if you've seen this already - jtk ] Friends, Those of you with knowledge, interest, or deployment experience with IP multicast in real networks should consider taking the survey linked to below. Forwarded with knowledge and permission of the original email author. The survey deadline has been extended to the end of this month. John From: Stig Venaas <stig@venaas.com> Date: Tue, Feb 25, 2020 at 1:24 PM Subject: Re: IGMPv3/MLDv2 implementation and deployment survey To: <pim@ietf.org> Cc: <pim-chairs@ietf.org> The IETF PIM Working Group intends to progress IGMPv3 and MLDv2 from Proposed Standards to Internet Standards. To facilitate that, the working group would like to get input from operators and others deploying multicast, and implementors of these protocols, to learn what the current implementation and deployment status is. If you are using multicast, or have implemented these protocols, please respond to the survey at https://jisc.onlinesurveys.ac.uk/implementation-and-deployment-of-igmpv3-and... It is sufficient to get responses from one person from each organization. The survey closes on March 13 2020. To get input from as many organizations as possible, please help forward this email, or distribute the URL, to any contacts you may have that have deployment or implementation experiences, on relevant mailing lists etc. If you have any queries about the survey, please contact the PIM WG chairs at pim-chairs@ietf.org. Regards Stig and Mike