in_delmulti
in_delmulti(imo->imo_membership[--imo->imo_num_memberships]);
in_delmulti(imo->imo_membership[--imo->imo_num_memberships]);
in_delmulti(ia->ia_allhosts);
in_delmulti(imo->imo_membership[i]);
void in_delmulti(struct in_multi *);
in_delmulti(imo->imo_membership[n]);
in_delmulti(imo->imo_membership[i]);
in_delmulti(inm);