cbind in R - put值，get level索引

I think my question is somewhat similar to this one. cbind is changing the values of the vector I am using (or using references to the values) I am basically getting data from a data frame and then organizing them in columns according to a certain factor (interface type). I think it has something to do with the levels, there, but I am not sure what those even mean right now. Here is what I ma doing and the results I am getting:I think my question is somewhat similar to this