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Why would you care what address your PC is using ? If your ISP gives you an other IPv6 assignment your router should just advertise that and your PC will use it

Why would you care what address your PC is using ? If your ISP gives you an other IPv6 assignment your router should just advertise that and your PC will use it. You wouldn't even notice. If your router doesn't do that is has a bad IPv6 implementation. The protocol itself is perfectly fine for that. That is one of the big stumbling blocks for IPv6: bad implementations in networking equipment. Causing a conflict in your LAN with address is a problem of IPv4 and the tiny address space it has. It forces you to keep a tight administration and use a bolt on address space management technology like DHCP. IPv6 does not have that problem and you'll have a service less to run. Indeed, it's not trivial. Many parties will have to do something. I hope they'll get more motivated as the price for IPv4 addresses rises even further. When CGNAT solutions get starved of socket space and adding extra IPv4 addresses gets prohibitively expensive maybe IPv4 will get so slow and unreliable people will give up on it. The graph of IPv4 address space pricing gives some hope: https://postimg.cc/QKKx847B https://postimg.cc/QKKx847B

magicalhippo 5y ago
> Why would you care what address your PC is using ? That's my point. I don't really care. Yet for IPv6 I suddenly need some way to automatically update the firewall rules etc, because the internal IP is also the public IP. > IPv6 does not have that problem and you'll have a service less to run. But how do you distribute DNS and NTP server addresses without something ala DHCP?
- Melkman 5y ago
  For DNS there is rfc6106. And for NTP and other services there is service discovery. Why would you set your own NTP server with DHCP ? Many clients like Android, iOS, Linux and Macos will connect to NITZ or predefined NTP server anyway and ignore the DHCP NTP settings.
  - magicalhippo 5y ago
    > And for NTP and other services there is service discovery. Do you have some links on how to configure this? > Why would you set your own NTP server with DHCP ? What kind of question is that? Because I have a local NTP server that I want them to use of course.
- kazen44 5y ago
  in regards to updating your firewall rules.. Having an outbound allow any and incoming deny any should be sufficient for home use (as it is with IPv4).
  - magicalhippo 5y ago
    > Having an outbound allow any and incoming deny any should be sufficient for home use (as it is with IPv4). The whole point of IPv6 is to allow peer-to-peer communication. For that I need to allow certain incoming connections. If you seriously think that is a non-issue, then what does IPv6 bring over IPv4 (with or without CG-NAT)?

magicalhippo 5y ago

> Why would you care what address your PC is using ? That's my point. I don't really care. Yet for IPv6 I suddenly need some way to automatically update the firewall rules etc, because the internal IP is also the public IP. > IPv6 does not have that problem and you'll have a service less to run. But how do you distribute DNS and NTP server addresses without something ala DHCP?

Melkman 5y ago
For DNS there is rfc6106. And for NTP and other services there is service discovery. Why would you set your own NTP server with DHCP ? Many clients like Android, iOS, Linux and Macos will connect to NITZ or predefined NTP server anyway and ignore the DHCP NTP settings.
- magicalhippo 5y ago
  > And for NTP and other services there is service discovery. Do you have some links on how to configure this? > Why would you set your own NTP server with DHCP ? What kind of question is that? Because I have a local NTP server that I want them to use of course.
kazen44 5y ago
in regards to updating your firewall rules.. Having an outbound allow any and incoming deny any should be sufficient for home use (as it is with IPv4).
- magicalhippo 5y ago
  > Having an outbound allow any and incoming deny any should be sufficient for home use (as it is with IPv4). The whole point of IPv6 is to allow peer-to-peer communication. For that I need to allow certain incoming connections. If you seriously think that is a non-issue, then what does IPv6 bring over IPv4 (with or without CG-NAT)?