title: radius add nas record to nas table fail
body: <p>my compony has a radius that was used to auth, now I want to use that to strongswan vpn , and after I config the strongswan,I config the radius that add  nas table a record    like </p>
  
  <pre><code> 10 | 172.16.2.10  | hlg-vpn   | other |  NULL | testing | NULL   | NULL      | RADIUS Client |
  </code></pre>
  
  <p>and ok, the 172.16.2.10 is the ipaddress of the strongswan server, and the nas table also contain others nas records those work fine .  </p>
  
  <p>the record I add to nas table seems doesn't work. when I auth the vpn with  a radius  account, the radius log is like </p>
  
  <pre><code>Sat Jun 24 20:34:45 2017 : Error: Ignoring request to authentication address * port 1812 from unknown client 172.16.2.10 port 48394
  Sat Jun 24 20:34:47 2017 : Error: Ignoring request to authentication address * port 1812 from unknown client 172.16.2.10 port 48394
  Sat Jun 24 20:34:50 2017 : Error: Ignoring request to authentication address * port 1812 from unknown client 172.16.2.10 port 48394
  Sat Jun 24 20:34:54 2017 : Error: Ignoring request to authentication address * port 1812 from unknown client 172.16.2.10 port 48394
  </code></pre>
  
  <p>I'm new to radius, am I lose config something after add a nas record to nas table?  could someone tell me why , thanks..</p>
  
  <p>something else,  I am sure the other nas record in the table work fine, because , the config seems true, and I don't find any other config like those nas records in the raddb directory, also, I google it , the config file sql.conf point out that nas table is in use. </p>