Red Hat Bugzilla – Bug 122637
mod_proxy does reverse DNS lookups (AS2.1)
Last modified: 2007-11-30 17:06:54 EST
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Description of problem:
This is the same bug as bugzilla 56580 but for AS2.1 apache instead of
If ProxyPass directives are used with numeric IP addresses such as
ProxyPass http://10.20.30.40/ /foo/
then mod_proxy does reverse lookups on the IP address, which is
futile, andcauses unexpected problems (since a good reason for using a
numeric IP would be that DNS is not configured correctly!).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.In /etc/httpd.conf, uncomment
LoadModule proxy_module modules/libproxy.so
add some setting so apache will be a reverse proxy fetching page from
a remote host defined with ip addresse such as:
ProxyPass /test http://172.16.10.53/
2. relaunch apache
3. ask for /test/
Actual Results: there is a reveverse query sent to the dns.
Expected Results: no reverse query is performed.
This problem does not appears on RHEL3.
An errata has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.