It's surprising that using a non-standard listening port will cause peers to actively avoid connecting to you, is it sensible to add this to the help message and the warnings on startup if people have changed the default? I can't find this behavior mentioned anywhere except for the comments in net.cpp. 

```
// do not allow non-default ports, unless after 50 invalid addresses selected already
if (addr.GetPort() != Params().GetDefaultPort() && nTries < 50)
continue;
```

https://github.com/bitcoin/bitcoin/blob/master/src/net.cpp#L1369

if (!chainstate->LoadChainTip(chainparams)) {
                            strLoadError = _("Error initializing block database");
                            failed_chainstate_init = true;
                            break; 
                        }
                        assert(chainstate->m_chain.Tip() != nullptr);
                    }
                }
                if (failed_chainstate_init) {
                    break; 
                }
            } catch (const std::exception& e) {
                LogPrintf("%s\n", e.what());
                strLoadError = _("Error opening block database");
                break;
            }
            bool failed_rewind{false};
            
            
            for (CChainState* chainstate : WITH_LOCK(::cs_main, return chainman.GetAll())) {
                if (!fReset) {
                    
                    
                    
                    uiInterface.InitMessage(_("Rewinding blocks...").translated);
                    if (!chainstate->RewindBlockIndex(chainparams)) {
                        strLoadError = _(
                            "Unable to rewind the database to a pre-fork state. "
                            "You will need to redownload the blockchain");