^^Why do you think India has held back the last couple of times? We realize the dangers of going to war, but frankly speaking simply because of public pressure I'm fairly certain India will have 'try something' if and when we're attacked again. I don't think it'll lead to a full fledged war though, maybe a skirmish or two at worst.
Of course it depends on the scale of the attack, so its up to Pakistan to make sure the 'water boils at the right temperature', we can live with a bomb blast or two just as you've learned to live with Balochistan. Mumbai style attacks however can lead to serious repercussions. I have an excellent article for you, I'll post it as soon as I can find it.