I have created dns zone under ISP using creator. My server has two public IP, let's say X.X.X.X and Y.Y.Y.Y. In dns zone I use X.X.X.X but in registrar panel I still have Y.Y.Y.Y and website under this specific domain works well and shows (in nslookup) IP Y.Y.Y.Y not this one specified in dns zone. I don't understand this behavior. Is it normal? I thought website should not work, because dns zone contains another IP (but this IP still belong to this same server).