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...
HelpExampleCli("setwalletflag", "avoid_reuse")
                  + HelpExampleRpc("setwalletflag", "\"avoid_reuse\"")
                },
            }.Check(request);
    std::string flag_str = request.params[0].get_str();
    bool value = request.params[1].isNull() || request.params[1].get_bool();
    if (!WALLET_FLAG_MAP.count(flag_str)) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Unknown wallet flag: %s", flag_str));
    }
    auto flag = WALLET_FLAG_MAP.at(flag_str);
    if (!(flag & MUTABLE_WALLET_FLAGS)) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Wallet flag is immutable: %s", flag_str));
    }
    UniValue res(UniValue::VOBJ);
    if (pwallet->IsWalletFlagSet(flag) == value) {
        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Wallet flag is already set to %s: %s", value ? "true" : "false", flag_str));
    }
    res.pushKV("flag_name", flag_str);
    res.pushKV("flag_state", value);
    if (value) {
        pwallet->SetWalletFlag(flag);
    } else {
        pwallet->UnsetWalletFlag(flag);
    }
    if (flag && value && WALLET_FLAG_CAVEATS.count(flag)) {
        res.pushKV("warnings", WALLET_FLAG_CAVEATS.at(flag));
    }
    return res;
}
static UniValue createwallet(const JSONRPCRequest& request)