My daughter is currently being bullied. I did not advocate with her to be physical, EVER.
Frankly, kids are going to make fun of each other. They are making fun of my daughter because it is fun to get a reaction out of her. I sometimes spy on my kids (looking out the window and watching them play) and I have seen what she does when they call her relatively mild names. Honestly, hitting someone isn’t going to help her. She needs to brush it off or start fighting (verbal) fire with (verbal) fire.
And, really, what can I do if she tells me? I can go out and tell the other kids not to be mean to her but then she is just going to get picked on more. So, I just try to teach her things she can say and we role-play it.
I have also tried to convince her that if the other kids are picking on someone else she should stand up to them. Surprisingly, she is much better at that and has made good friends this way.
TL;DR I don’t teach my kid that violence will help.