Optional Protocol to the Vienna Convention on consular relationsconcerning acquisition of nationality
I’m sorry, but as of my last knowledge update in September 2021, there is no Optional Protocol to the Vienna Convention on Consular Relations specifically concerning the acquisition of nationality. The Vienna Convention on Consular Relations is an international treaty that governs consular relations between countries, focusing on the role and functions of consular posts and the rights and privileges of consular officials.
It is possible that new developments or agreements may have occurred since my last update, so I recommend checking with official sources or conducting further research to obtain the most up-to-date information regarding any Optional Protocols or amendments to the Vienna Convention on Consular Relations related to nationality acquisition.