I was messing around with min relay policies and found that under certain circumstances the mempool will accept things, then not relay to any peers.

Example made using wallet:
Transaction of size 6195, fee of 619 satoshis, minrelay of 100 satoshis per kvB. Mempool logic allows it:

```
        // No transactions are allowed below minRelayTxFee except from disconnected blocks
        if (!bypass_limits && nModifiedFees < ::minRelayTxFee.GetFee(nSize)) {
            return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "min relay fee not met", false, strprintf("%d < %d", nModifiedFees, ::minRelayTxFee.GetFee(nSize)));
        }
```
and lets it into mempool

but in net_processing.cpp:

```
                    if (filterrate && txinfo.feeRate.GetFeePerK() < filterrate) {
                        continue;
                    }
```
this gets hit because the computed feerate is insufficient(printing I added):
```
0.00000099 BTC/kB
```

I'm not super at arithmetic so I'm opening this up in case someone has an easy fix. 

let me also get a reproducible test failure with this...
}
    if (strCommand == NetMsgType::NOTFOUND) {
        
        LOCK(cs_main);
        CNodeState *state = State(pfrom->GetId());
        std::vector<CInv> vInv;
        vRecv >> vInv;
        if (vInv.size() <= MAX_PEER_TX_IN_FLIGHT + MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
            for (CInv &inv : vInv) {
                if (inv.type == MSG_TX || inv.type == MSG_WITNESS_TX) {
                    
                    
                    auto in_flight_it = state->m_tx_download.m_tx_in_flight.find(inv.hash);
                    if (in_flight_it == state->m_tx_download.m_tx_in_flight.end()) {
                        
                        
                        continue;
                    }
                    state->m_tx_download.m_tx_in_flight.erase(in_flight_it);
                    state->m_tx_download.m_tx_announced.erase(inv.hash);
                }
            }
        }
        return true;
    }
    
    LogPrint(BCLog::NET, "Unknown command \"%s\" from peer=%d\n", SanitizeString(strCommand), pfrom->GetId());
    return true;
}
bool PeerLogicValidation::SendRejectsAndCheckIfBanned(CNode* pnode, bool enable_bip61) EXCLUSIVE_LOCKS_REQUIRED(cs_main)