> Addresses are 128 bits long and written as 8 four-letter hex blocks separated by colons (i.e. fd69:beef:cafe:feed:face:6969:0420:0001) I suspect you mean "e.

> Addresses are 128 bits long and written as 8 four-letter hex blocks separated by colons (i.e. fd69:beef:cafe:feed:face:6969:0420:0001) I suspect you mean "e.g." rather than "i.e."