Im a dogger and i admit: My dog does not care about borders (even if it is a border terrier). Even if I care, and I do,about borders he will goand do go where the quarry goes no matter whose land that is. Its what he does and loves. But here its like that with everybody having dogs. It evens out in the long run and there is never any hard words or trouble its just common practice. The law here states that the drive should mainly be within ones own land so Im legal and hence ethically untouchable. In this case TRADITION works my way.
All neighbors hunt moose,wild boarand fox together so its a living interaction and just a normality with dogs running.
Yes, I get angry when others dogs run deer on our land and it spoils my huntbut the moral standards here are that it is taboo to shoot game for someone elses dog. Thats cheating and unethical! and nobody does it.

Shooting a dog=murder= blood vengence. Never happens.

Just wanted to mention how it can be different in different places.