var pppConnectedPlugKmod = []byte(`
ppp_generic
`)

...

func (iface *PppInterface) ConnectedPlugSnippet(plug *interfaces.Plug, slot *interfaces.Slot, securitySystem interfaces.SecuritySystem) ([]byte, error) {
	switch securitySystem {
	case interfaces.SecurityAppArmor:
		return pppConnectedPlugAppArmor, nil
	case interfaces.SecurityKMod:
		return pppConnectedPlugKmod, nil
	}
	return nil, nil
}