I'm using Apache to front-end some servers listening on loopback but the ProxyPass directive doesn't like IPv6 addresses.
I spin up a server on IPv6 address [::1]:8001, confirmed working using cURL and shown here on nestat:
tcp 0 0 ::1:8001 :::* LISTEN 1348/./WebToolsTest
I use the following ProxyPass directive:
ProxyPass / http://[::1]:8001/
ProxyPassReverse / http://[::1]:8001/
However, when I try to connect using any HTTP client, I get the following error in logs:
[Sun Jun 29 21:12:40 2014] [error] [client 24.228.250.155] proxy: DNS lookup failure for: ::1 returned by /
When I switch everything to IPv4, i.e. bind the back end to
127.0.0.1:8001 and switch ProxyPass,
everything works fine.
Why would mod_proxy accept IPv4 addresses but not IPv6? Why is it doing a DNS lookup on IPv6 addresses?
Thanks,
Nader
