Per https://www.nytimes.com/2001/12/07/news/rumsfeld-rejects-planto-allow-mullah-omar-to-live-in-dignity-taliban.html https://www.nytimes.com/2001/12/07/news/ru

Per https://www.nytimes.com/2001/12/07/news/rumsfeld-rejects-planto-allow-mullah-omar-to-live-in-dignity-taliban.html https://www.nytimes.com/2001/12/07/news/rumsfeld-rejects-pla... which I think is describing the same incident it was not an "unconditional surrender", though it was somewhat close: the conditions were about immunity from prosecution or punishment for Mullah Mohammed Omar (Taliban's leader at the time).