MCIF_DLVR_BY
if (!bitset(MCIF_DLVR_BY, mci->mci_flags))
!bitset(MCIF_DLVR_BY, mci->mci_flags) &&
{ MCIF_DLVR_BY, "DLVR_BY" },
if (bitset(MCIF_DLVR_BY, mci->mci_flags) &&
!bitset(MCIF_DLVR_BY, mci->mci_flags))
mci->mci_flags |= MCIF_DLVR_BY;