News for hackers. Stuff that matters.

A comment on Comcast Activates First Users With IPv6 Native Dual Stack Over DOCSIS.

Re:Comcast Activates First Users With IPv6 Native Dual Stack... by allenbrunson on Wednesday February 02, 2011 @05:52AM (#2169795)
Okay, if we're really starting to do this, then I guess I have to figure out how to upgrade all my code to deal with IPV6. I use the BSD sockets interface for most things.

I assume we'll be living in a mixed IPV4/IPV6 world for awhile. Who's got a tutorial for making a connection to a host using IPV6 if available, but falling back to IPV4 if it isn't?

[ Parent | on HN ]
Re:Comcast Activates First Users With IPv6 Native Dual Stack... by dfox on Wednesday February 02, 2011 @06:34AM (#2169872)
See getaddrinfo(3) man page, that should be almost all you want. Making code mixed v4/v6 that way actually seems easier than v4-only solution with gethostbyname(3) and building struct sockaddr manually.
[ Parent | on HN ]