<div dir="ltr"><div><div><div><div>Hi,<br><br></div><div>I'm testing:<br><br>$ sudo nsd-control status<br>version: 4.0.1<br>verbosity: 2<br><br>I found a loop problem with this record:<br>* IN CNAME none<br>
("none" means no matching record in zone and therefore match * again)<br></div><br></div>Queries that use "* CNAME" will result in a loop. The response will use TCP and will be limited to 65k bytes<br>
<br>$ dig @<a href="http://127.0.0.1">127.0.0.1</a> <a href="http://sdfgsfg.test.com">sdfgsfg.test.com</a><br><br>;; Truncated, retrying in TCP mode.<br><br>; <<>> DiG 9.8.1-P1 <<>> @<a href="http://127.0.0.1">127.0.0.1</a> <a href="http://sdfgsfg.test.com">sdfgsfg.test.com</a><br>
; (1 server found)<br>;; global options: +cmd<br>;; Got answer:<br>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30440<br>;; flags: qr aa tc rd; QUERY: 1, ANSWER: 4678, AUTHORITY: 0, ADDITIONAL: 0<br>;; WARNING: recursion requested but not available<br>
<br>;; QUESTION SECTION:<br>;<a href="http://sdfgsfg.test.com">sdfgsfg.test.com</a>. IN A<br><br>;; ANSWER SECTION:<br><a href="http://sdfgsfg.test.com">sdfgsfg.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>.<br>.<br>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br>
<a href="http://none.test.com">none.test.com</a>. 6400 IN CNAME <a href="http://none.test.com">none.test.com</a>.<br><br>;; Query time: 85 msec<br>;; SERVER: 127.0.0.1#53(127.0.0.1)<br>;; WHEN: Tue Nov 19 08:36:52 2013<br>
;; MSG SIZE rcvd: 65531<br><br>--------------------------------------------<br><br></div>A more likely example of this problem is below <br>* IN CNAME <a href="http://www.google.com">www.google.com</a> (ending dot is missing)<br>
<br>;; QUESTION SECTION:<br>;<a href="http://sdfgsf.test.com">sdfgsf.test.com</a>. IN A<br><br>;; ANSWER SECTION:<br><a href="http://sdfgsf.test.com">sdfgsf.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br>
<a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br><a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br>
<a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br><a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br>
<a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br><a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br>
<a href="http://www.google.com.test.com">www.google.com.test.com</a>. 6400 IN CNAME <a href="http://www.google.com.test.com">www.google.com.test.com</a>.<br><br><br></div>Chris<br><br><div><br><div><br></div></div>
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