sin6tocsa
looutput(mif6table[reg_mif_num].m6_ifp, m, sin6tocsa(&dst),
sin6tocsa(&sin6));
error = if_output_lock(ifp, origifp, m, sin6tocsa(dst), rt);
error = if_output_lock(ifp, ifp, m, sin6tocsa(dst), rt);
dstaddr = ifa_ifwithdstaddr(sin6tocsa(addr));
rt = rtalloc1(sin6tocsa(addr), 0);
sin6tocsa(sa6_src), 0, cmd, cmdarg, notify);
sin6tocsa(sa6_src), uh.uh_sport, cmd, cmdarg,
sin6tocsa(sa6_src), 0, cmd, cmdarg, notify);