  We analyse stability of almost massless Dirac mode in gauge models with
boundary (domain wall) fermions, and consider the possibility of decoupling one
of its chiral component by giving it a Majorana mass of the order of the
inverse lattice spacing. We argue that the chiral spectrum in such models is
always uncharged, so they can be implemented for defining the Weyl fermions
only in the real representation of the gauge group, for instance, in SUSY
models.
