Dear IPv6 WG mailing list members, RIPE 91 will be held in Bucharest, Romania from 20-24 October 2025, as well as online. For any form of participation you can register at https://ripe91.ripe.net/attend/attendee-info/register/ Please keep in mind that the early bird rate is only available until 21st of July 2025! The IPv6 Working Group session is scheduled for Thursday 23 October from 9:00 - 10:30 (UTC+2). We are looking for presentations! In the last years only sessions for the Plenary could be registered via the website and the WG presentations needed to be sent via email to the WG chairs. This has changed for the next meeting and we are now using Pretalx for all presentations! Please submit your presentations here: https://ripe91.ripe.net/present/call-for-presentations/ You will need a RIPE NCC Access account and enable two-factor authentication in order to access the submission system. If you don't have a RIPE NCC Access account yet, please create it here: https://access.ripe.net/registration If you like to discuss your presentation with us first, please email ipv6-wg-chair@ripe.net. The deadlines mentioned on the CfP page above are for the Plenary. For the WG session we also accept submissions after the deadlines, but for better planning we prefer to have your submission as soon as possible. On 20th of September we will start to decide about the agenda and see, if we still have open slots. Once we have decided on the agenda, we'll contact the presenters. We expect to have a draft of the presentations about two weeks before the meeting and the final slides at least two days before our session. On behalf of the IPv6 WG co-chairs, Ray and Chris