MPLS_GETSADDR
msh.s_addr = MPLS_GETSADDR(rt);
msh.s_addr = MPLS_GETSADDR(rt);
mh.s_addr = MPLS_GETSADDR(rt);
tshim.s_addr = MPLS_GETSADDR(rt);
msh.s_addr = MPLS_GETSADDR(rt);
msh.s_addr = MPLS_GETSADDR(rt);