I am running CentOS 6.5 on my desktop. I've set the Network Proxy using the network proxy application provided under Preferences. I've also set the following exceptions: localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16

But whenever I am using wget (I'm testing the proxy settings using using wget) then wget tries to connect to the proxy for private addresses, but wget localhost works fine and doesn't use the proxy.

I also removed all the proxy settings and set the proxy in the shell:

export http_proxy="<proxy_url>:<port>"
export https_proxy="<proxy_url>:<port>"
export no_proxy="localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16"

It work when I use the command wget <external_url> or wget localhost but fails when I use the command wget <private address from the $no_proxy variable>.

I also tried setting the variables in Ubuntu 14.04 also and facing the same issue.

Regards,