Created attachment 813492 [details] getnameinfo.c from Postfix source Description of problem: The glibc function call getnameinfo fails when the DNS response exceeds ~ 1024 bytes. It appears this was fixed upstream in early 2008: https://sourceware.org/bugzilla/show_bug.cgi?id=5790 And was reported to Fedora, although never backported to RHEL: https://bugzilla.redhat.com/show_bug.cgi?id=428067 Version-Release number of selected component (if applicable): glibc-2.5-107.el5_9.5 How reproducible: Always Steps to Reproduce: 1. Compile and run the attached getnameinfo.c program (or grab it from postfix source) 2. Query an IP with 100+ PTR records Actual results: ./getnameinfo 216.163.249.229 getnameinfo 216.163.249.229: Name or service not known Expected results: Information about any one of the valid PTR records should be displayed. (The below is from an CentOS 6 box with glibc-2.12-1.107.el6.x86_64) ./getnameinfo 216.163.249.229 Hostname: ms1.fpwmetlife.com Address: 216.163.249.229 Additional info: I was hoping the patch for this issue would be backported to RHEL 5.
Thanks for submitting this issue. We'll consider this bug while we scope issues to fix for the next release.
Just an FYI from the planning call. This will be ack'd by PM and is expected to be within QE capacity for RHEL 5.11.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux release for currently deployed products. This request is not yet committed for inclusion in a release.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2014-1213.html