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...
nodestate->pindexBestHeaderSent = pindex ? pindex : ::ChainActive().Tip();
        connman->PushMessage(pfrom, msgMaker.Make(NetMsgType::HEADERS, vHeaders));
        return true;
    }
    if (strCommand == NetMsgType::TX) {
        
        
        
        if ((!g_relay_txes && !pfrom->HasPermission(PF_RELAY)) || (pfrom->m_tx_relay == nullptr))
        {
            LogPrint(BCLog::NET, "transaction sent in violation of protocol peer=%d\n", pfrom->GetId());
            pfrom->fDisconnect = true;
            return true;
        }
        CTransactionRef ptx;
        vRecv >> ptx;
        const CTransaction& tx = *ptx;
        CInv inv(MSG_TX, tx.GetHash());
        pfrom->AddInventoryKnown(inv);
        LOCK2(cs_main, g_cs_orphans);
        bool fMissingInputs = false;
        CValidationState state;
        CNodeState* nodestate = State(pfrom->GetId());
        nodestate->m_tx_download.m_tx_announced.erase(inv.hash);