Tuesday, January 12, 2016

When IPv4 Doesnt Respond, But IPv6 Does

I got onto this server that, when I did a ping to another server, would only return an IPv6 address.   I mean, I had the server name, but to do what I needed, I just needed the IPv4 address, and not the IPv6 address.  Since I didn't know what to make of it, I needed to find a way to get it to respond with the IPv4 address.
So, here is what I did.  I added the "-4" option behind my ping statement.  See below.  The name of the server I want to ping is "jcupdate".  If you look at the top, you will see where the IPv6 response came.  Then I ran the "ping jcupdate -4" to get what I was looking for.


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