update: you can't just dump degrees minutes seconds into an ipv6 address and call it done, it won't fit if you separate each part. But! decimal degrees do fit:
fd00:1a7:40:7288:7800:ff73:9951:1100 can be a stand-in for 40.728878, -73.995111
the 1a7 is for "lat",
@wxcafe writing decimals in a hex field is definitely the worst part of this
@jleedev why? it works!