anchor.diff:   <li><b>ERR - Private TCP Address</b> - You must never advertise an unroutable IP address such as
        127.0.0.1 or 192.168.1.1 as your external address. Correct the address or disable inbound TCP above.
    <li><b>ERR - SymmetricNAT</b> - I2P detected that you are firewalled by a Symmetric NAT.
  -     I2P does not work behind this type of firewall.
  +     I2P does not work well behind this type of firewall. You will probably not be able to
  +     accept inbound connections, which will limit your participation in the network.
    <li><b>ERR - UDP Port In Use - Set i2np.udp.internalPort=xxxx in advanced config and restart</b> -
        I2P was unable to bind to port 8887 or other configured port.
        Check to see if another program is using port 8887. If so, stop that program or configure
  
positive.code:     the <i>Status: Firewalled</i> line), or you can manually require them here.  
      Users behind symmetric NATs, such as OpenBSD's pf, are not currently supported.</p>
  <input type="submit" name="recheckReachability" value="Check network reachability..." />
   <hr />
   <b>Inbound TCP connection configuration:</b><br />
   Externally reachable hostname or IP address:
      <input name ="ntcphost" type="text" size="16" value="<jsp:getProperty name="nethelper" property="ntcphostname" />" />
  
negative.code:  <li><b>Firewalled</b> - Your UDP port appears to be firewalled.
       As the firewall detection methods are not 100% reliable, this may occasionally be displayed in error.
       However, if it appears consistently, you should check whether both your external and internal
       firewalls are open on port 8887. I2P will work fine when firewalled, there is no reason for concern.
       When firewalled, the router uses "introducers" to relay inbound connections.
       However, you will get more participating traffic and help the network more if you can open your
       firewall(s). If you think you have already done so, remember that you may have both a hardware
       and a software firewall, or be behind an additional, institutional firewall you cannot control.
       Also, some routers cannot correctly forward both TCP and UDP on a single port, or may have other
       limitations or bugs that prevent them from passing traffic through to I2P.
   <li><b>Testing</b> - The router is currently testing whether your UDP port is firewalled.
   <li><b>Hidden</b> - The router is not configured to publish its address,
       therefore it does not expect incoming connections.
  