RF_HEADERADDR
flags = RF_HEADERADDR|RF_ADDDOMAIN;
bitset(RF_HEADERADDR, tryflags) ? "header"
tryflags |= RF_HEADERADDR;
tryflags &= ~RF_HEADERADDR;
exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e';
bitset(RF_HEADERADDR, tryflags) ?
!bitset(RF_SENDERADDR|RF_HEADERADDR|RF_RM_ADDR, flags) &&
!bitset(RF_SENDERADDR|RF_HEADERADDR, flags))
rwset = bitset(RF_HEADERADDR, flags) ? m->m_sh_rwset
rwset = bitset(RF_HEADERADDR, flags) ? m->m_rh_rwset
addrtype[0] = bitset(RF_HEADERADDR, flags) ? 'h' : 'e';