To answer the question of a visa requirement to attend IETF63 in France -- for citizens of all countries. According to your nationality, the country where you reside, and the duration and purpose of your stay in France, a visa may be required before departure. Citizens of most countries do not need a visa. Examples of where a visa is not needed for IETF63 include: citizens of the EU, USA, Canada, Mexico. You should have a current passport; carry with you something, for example a business card or letters, that identifies your employer and that you are a professional; and information about where you will be staying. France does not require you to carry a formal letter of invitation from the organizing body. The French government provides a web page that definitively will tell you if you require a visa. Go to: www.diplomatie.fr/venir/visas/ Select your language preference - English, French, Spanish. 1. In list at left, select the country you reside in. 2. In list at right, select the nationality of your passport. 3. Below, select "short term (up to 3 months)". 4. Select purpose of your stay as "Professional" and "Business trip". 5. Press Submit. 6. A new page will tell you need or do not need a visa. If a visa is needed, that page will have a link to a visa application form, detailed instructions for documentation required with the application, and a link to locations to apply for the visa. To obtain the visa, you may require a letter of invitation, see www.ietf.org/meetings/IETF-63.html. An exception. If your passport identifies you as a government official, you are required to obtain a visa. Hope this helps. Gene Gaines _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf