Pau Amma wrote the following on 3/4/2013 12:40 PM:
On Mon, March 4, 2013 6:31 pm, Blake Hudson wrote:
OK, so we ask for a PTR on 212.0.171.63.in-addr.arpa and instead receive
a CNAME (with additional). Did anyone notice that the CNAME does not
resolve?
Does for me. *shrug*
$ dig +noall +question +answer -x 63.171.0.212
;212.0.171.63.in-addr.arpa. IN PTR
212.0.171.63.in-addr.arpa. 86085
IN CNAME 63.171.0.212.cust.lkq.sprintlink.net.
63.171.0.212.cust.lkq.sprintlink.net. 21285 IN PTR mail1.lkqcorp.com.
$ dig +noall +question +answer mail1.lkqcorp.com
;mail1.lkqcorp.com. IN A
mail1.lkqcorp.com. 7653 IN A 63.171.0.212
The CNAME returned by sprintlink is
63.171.0.212.cust.lkq.sprintlink.net. You did a query for
mail1.lkqcorp.com...
