NAF_OFFSETS
na.na_flags = NAF_BDG_MAYSLEEP | NAF_OFFSETS;
na.na_flags = NAF_OFFSETS;
if (!(na->na_flags & NAF_OFFSETS)) {
mna->up.na_flags |= (pna->na_flags & NAF_HOST_RINGS) & ~NAF_OFFSETS;
mna->up.na_flags |= NAF_OFFSETS;
nna->up.na_flags = NAF_OFFSETS;
mna->up.na_flags |= NAF_MEM_OWNER | NAF_OFFSETS;
na->na_flags |= (NAF_BDG_MAYSLEEP | NAF_OFFSETS);
na.na_flags = NAF_BDG_MAYSLEEP | NAF_MOREFRAG | NAF_OFFSETS;