Chain link, and add Invisible Fencing on the inside of your physical fence, so they can't reach that easy to breach wall. Or, at least, add electric fencing inside, so getting to the fence is not fun.
Either electric livestock type fencing, or dog collar type Invisible fencing, will be less difficult than the buried 2' underground, and six foot wall type fencing. And some dogs can jump six feet, and/ or climb chain link.
The goal is to prevent the little darlings from getting to the fence...
mary