Zevachim 111: Where and When Did We Change Nesachim (Wine Libations)?

The Gemara continues its discussion of where a sacrificial service is permitted to take place.  Some of the ideas shared, discussed, etc:

• in the desert sacrifices were brought to the mishkan, the tabernacle
• when in Israel but without an altar at the Temple, there were private altars
• when the tabernacle stood in Shiloh, it served as an altar and other altars were prohibited
• on entering Israel, nesachim, wine libations were introduced (Bamidbar 15:2)
• a baraita suggests that only when the people were comfortably settled on the land did nesachim begin
• Rabbi Akiva says that as soon as the people entered the land, all sacrifices required nesachim
• Rabbi Yishmael said that no nesachim were brought to the mishkan and so this was a new requirement once the people entered the land
• Rabbi Akiva believed that wine libations were in fact brought in the mishkan, and thus the pasuk that required them to happen in Israel must refer to sacrifices brought on private altars which were prohibited in the desert