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Can anyone offer an explanation why IPv6 still has not blanketed the world yet? I mean if client pings an IPv4 address, it should be automatically converted to

Can anyone offer an explanation why IPv6 still has not blanketed the world yet? I mean if client pings an IPv4 address, it should be automatically converted to an IPv6 version. So why isn't IPv4 instantly outdated?

takeda 9y ago
People are lazy and will wait for absolutely the last moment: "why should I spend time configuring my network when I still can purchase IPv4?" This was especially bad because vendors and ISPs had the same attitude, so even when there was someone willing to do the work, those parties stayed in the way. I actually see great parallels about Python 2 vs 3. The changes between these versions aren't really big, and converting is not that hard. Other languages already did it many times (Ruby actually did it when switching from 1.8 to 1.9, but people moved on quickly, because if they didn't, their apps and libraries no longer would work and no one would use them). IMHO the real cause was that Python gave a lot of time to do it (nearly 15 years!), but there was no real interest in Py3 until 2015 when Python 2.7 went into maintenance mode (no new features backported, BTW all features of Python 2.7 were backports of Python 3, fueling "Python 3 doesn't have anything new, what should I switch?"), and organizations most likey will wait until 2020 (EOL) to port their applications.
- briffle 9y ago
  I was a charter business fiber customer for 5 years. (multiple sites in multiple states) I asked every few months, got relayed to the same web page sayings "its rollout is planned in Q4" (for 5 years it said that, never included the year) and gave instructions on how to setup the single 6RD server they had in St. Louis. They merged with a few other cable companies, who had working ipv6, but nobody could give me timelines. We had customers wanting to access our applications via IPV6. We actually had to setup a remote proxy on an IPv6 network to then proxy back over IPv4. I left that job a year ago, so perhaps Charter has had a huge change of heart, but I strongly doubt it.
tedunangst 9y ago
What? Converted by who? How does this work?
- betaby 9y ago
  For IPv6 only like that https://tools.ietf.org/html/rfc6877 https://tools.ietf.org/html/rfc6877 Sprint mobile uses that method
- azernik 9y ago
  To elaborate other commenter's reference to XLAT: There is an IPv6 address block assigned for "IPv4-translated" address (::ffff:0:$IP4ADDR). In networks that support this, packets destined for these addresses are routed to a NAT64 box for introduction to the v4 internet. Like all NAT-based solutions, this only provides support for outgoing connections out of the box, but that's unavoidable without assigning v4 addresses to hosts, and in the consumer ISP use case is all you need anyway.

takeda 9y ago

People are lazy and will wait for absolutely the last moment: "why should I spend time configuring my network when I still can purchase IPv4?" This was especially bad because vendors and ISPs had the same attitude, so even when there was someone willing to do the work, those parties stayed in the way. I actually see great parallels about Python 2 vs 3. The changes between these versions aren't really big, and converting is not that hard. Other languages already did it many times (Ruby actually did it when switching from 1.8 to 1.9, but people moved on quickly, because if they didn't, their apps and libraries no longer would work and no one would use them). IMHO the real cause was that Python gave a lot of time to do it (nearly 15 years!), but there was no real interest in Py3 until 2015 when Python 2.7 went into maintenance mode (no new features backported, BTW all features of Python 2.7 were backports of Python 3, fueling "Python 3 doesn't have anything new, what should I switch?"), and organizations most likey will wait until 2020 (EOL) to port their applications.

briffle 9y ago
I was a charter business fiber customer for 5 years. (multiple sites in multiple states) I asked every few months, got relayed to the same web page sayings "its rollout is planned in Q4" (for 5 years it said that, never included the year) and gave instructions on how to setup the single 6RD server they had in St. Louis. They merged with a few other cable companies, who had working ipv6, but nobody could give me timelines. We had customers wanting to access our applications via IPV6. We actually had to setup a remote proxy on an IPv6 network to then proxy back over IPv4. I left that job a year ago, so perhaps Charter has had a huge change of heart, but I strongly doubt it.

tedunangst 9y ago

What? Converted by who? How does this work?

betaby 9y ago
For IPv6 only like that https://tools.ietf.org/html/rfc6877 https://tools.ietf.org/html/rfc6877 Sprint mobile uses that method
azernik 9y ago
To elaborate other commenter's reference to XLAT: There is an IPv6 address block assigned for "IPv4-translated" address (::ffff:0:$IP4ADDR). In networks that support this, packets destined for these addresses are routed to a NAT64 box for introduction to the v4 internet. Like all NAT-based solutions, this only provides support for outgoing connections out of the box, but that's unavoidable without assigning v4 addresses to hosts, and in the consumer ISP use case is all you need anyway.