I am confused on an issue relating to gluons and mass. As I understand it, quarks don't actually have a lot of rest mass. In fact, most of the rest mass found in Hadrons arises from the interactions and energy of the Gluon field between quarks(??). This sounds like GR to me, meaning that the energy of the field creates mass according to e=mc2. I am confused on a certain idea... If gluons are massless, then they have no rest-mass, like a photon. This means that they do not interact with the Higgs field. How then can the higgs field impart mass to the entire energy of the hadron, if the higgs field cannot interact with the gluons?? I'm not sure if I'm getting the language correct. I think the center of my question revolves around the idea that the Higgs mechanism is giving mass to particles, but how does the hadron gain so much rest mass, if the Higgs only interacts with a fraction of the particles than constitute it?