For software that interfaces with Bitcoin Core via RPC, it can be useful to know whether the fRelayTxes flag is set. It could be added to `getnetworkinfo`.

if (IsLimited(addr))
                continue;
            
            if (nANow - addr.nLastTry < 600 && nTries < 30)
                continue;
            
            if (addr.GetPort() != Params().GetDefaultPort() && nTries < 50)
                continue;
            addrConnect = addr;
            break;
        }
        if (addrConnect.IsValid())
            OpenNetworkConnection(addrConnect, &grant);
    }
}
void ThreadOpenAddedConnections()
{
    {
        LOCK(cs_vAddedNodes);
        vAddedNodes = mapMultiArgs["-addnode"];
    }
    if (HaveNameProxy()) {
        while(true) {
            list<string> lAddresses(0);
            {
                LOCK(cs_vAddedNodes);
                BOOST_FOREACH(const std::string& strAddNode, vAddedNodes)
                    lAddresses.push_back(strAddNode);
            }
            BOOST_FOREACH(const std::string& strAddNode, lAddresses) {