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=The Intracare Implementation Log (Back to Episode 2) (Back to Log Homepage) (On to Episode 4)

IPv4 vs. IPv6

Ignacio Valdes Jul 15 2008, 3:30 pm

Tried to install WVEHR-VOE only we ran into a authentication problem with CPRS. We are running IPv6 and apparently that doesn't work yet. We're seeing about fixing that.

-- IV

Greg Woodhouse

That's a big one.

Ignacio Valdes

Like, showstopping big? -- IV

Chris U

IPv4: IPv6: 2001:0db8:85a3:08d3:1319:8a2e:0370:7334

You will notice the differences in syntax; periods/dots (IPv4) versus colons (IPv6). Extending further, in IPv4,, the number after the colon is represented as the port; in this case port 443. In VistA, they use the colon as a delimiter to strip the port number.

Here is what I modified to get IPv6 working - http://pastebin.com/f6aa67ea

Mahalo, Chris

Nancy Anthracite

Chris, would you please submit these to the trac server for WorldVistA EHR at


Thanks for doing this! -- Nancy Anthracite

Greg Woodhouse

Hey...I'm impressed.

Woodhouse Gregory

The reason I'm impressed that a change to the exec executable wasn't needed is that there's a parameter to the socket() call indicating the address type. Of course, if you accept a connection, then you can tell. Oh, wait, we don't do callbacks anymore <slap forehead>!

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