this condition is quite hard to read. Maybe positive form is better to read?
lets consider how look this:

```
ls = ls.select { |line| line.include?("inet") && !line.include?("Scope:Link")}
```
It is easier for me to read as I can read it as
`Select lines that include "inet" and not include "Scope:Link"`
which is easier to read for me then
`Delete lines that doesn't include "inet" or include "Scope:Link"`
First say what I want, second filter out thinks, but with negation, so in fact you want lines with inet with exception. I hope I write it clear.