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...
{
    AssertLockHeld(cs_main);
    CNodeState &state = *State(pnode->GetId());
    if (enable_bip61) {
        for (const CBlockReject& reject : state.rejects) {
            connman->PushMessage(pnode, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::REJECT, std::string(NetMsgType::BLOCK), reject.chRejectCode, reject.strRejectReason, reject.hashBlock));
        }
    }
    state.rejects.clear();
    if (state.fShouldBan) {
        state.fShouldBan = false;
        if (pnode->HasPermission(PF_NOBAN))
            LogPrintf("Warning: not punishing whitelisted peer %s!\n", pnode->addr.ToString());
        else if (pnode->m_manual_connection)
            LogPrintf("Warning: not punishing manually-connected peer %s!\n", pnode->addr.ToString());
        else if (pnode->addr.IsLocal()) {
            
            LogPrintf("Warning: disconnecting but not banning local peer %s!\n", pnode->addr.ToString());
            pnode->fDisconnect = true;
        } else {
            
            if (m_banman) {
                m_banman->Ban(pnode->addr, BanReasonNodeMisbehaving);
            }
            connman->DisconnectNode(pnode->addr);
        }
        return true;
    }