My experience with IPv6. I have option to enable full dual stack with my ISP. After doing this I noticed that YT/FB/Google were significantly faster, however my kids started to complaing that some games began to have connectivity issues. Minecraft have problems to start. On a number of sites load time was noticebly longer. Switching off IPv6 as a experiment on one of kids PC solved all issues. My conslusion is that i…
I spent a week without IPv4 to understand IPv6 transition mechanisms
121–130 of 511 posts
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#122Question from a (relative) IPv6 newbie that wasn't addressed in TFA: Let's say I have a very small home lab. I have a handful of hosts that get their IP addresses via DHCP from my router. In the router, DHCP and DNS are tightly coupled such that the router essentially always knows the MAC address, IP address and hostname of each device. Now I want to run IPv6 on this network as a first-class citizen. Since DHCPv6 is…
Can't answer your main question, but from what I recall, DHCPv6 is kind of necessary anyway. It's the easiest/main way for the client to receive DNS server information, even if default gateway discovery is now down through multicast. I believe there is another way, but the router has to support it and I forget what it's called.
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#123Earlier quoted context omitted.
NAT and a Firewall are two different concepts. What's wrong with a firewall that blocks everything by default, yet all your devices have a public IP?
Maybe you don't want to reveal your internal infrastructure to the world? Seems like basic opsec.
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#124Earlier quoted context omitted.
Every packet leaving an IPv6 network that isn't NATed has an effective node ID in the packet. No need to guess just look at the packets.
Your machines could change their IPs for every second of every day and you wouldn't come close to exhausting your /64 subnet for the next billion years.
With any usable N, a clever observer would still easily work out what you were doing and still map out your infrastructure.
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#125Everyone always goes with the "You don't need NAT, everything is globally routable!" argument, as if that's something that anybody wants. Everything on my network is going to go through my firewall anyway. I don't want anything on my network to be globally routable. Of course, this is not a good reason to not use IPv6, don't get me wrong. It's a problem that's easy to overcome, I just think it's not a good way to get…
There is no downside to everything to be globally routable. It's completely orthogonal to firewalling. What is the risk you're picturing here? I'm really curious. Features like RFC4941/8981 mean nobody can infer anything about your network from the source addresses they see making requests out if it. If you want to use link-local V6 addresses and NAT to a global one, you can do that. But IMHO that's sacrificing one o…
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#126Everyone always goes with the "You don't need NAT, everything is globally routable!" argument, as if that's something that anybody wants. Everything on my network is going to go through my firewall anyway. I don't want anything on my network to be globally routable. Of course, this is not a good reason to not use IPv6, don't get me wrong. It's a problem that's easy to overcome, I just think it's not a good way to get…
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#127Question from a (relative) IPv6 newbie that wasn't addressed in TFA: Let's say I have a very small home lab. I have a handful of hosts that get their IP addresses via DHCP from my router. In the router, DHCP and DNS are tightly coupled such that the router essentially always knows the MAC address, IP address and hostname of each device. Now I want to run IPv6 on this network as a first-class citizen. Since DHCPv6 is…
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#128My experience with IPv6. I have option to enable full dual stack with my ISP. After doing this I noticed that YT/FB/Google were significantly faster, however my kids started to complaing that some games began to have connectivity issues. Minecraft have problems to start. On a number of sites load time was noticebly longer. Switching off IPv6 as a experiment on one of kids PC solved all issues. My conslusion is that i…
Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#129Re: I spent a week without IPv4 to understand IPv6 transition mechanisms
#130Question from a (relative) IPv6 newbie that wasn't addressed in TFA: Let's say I have a very small home lab. I have a handful of hosts that get their IP addresses via DHCP from my router. In the router, DHCP and DNS are tightly coupled such that the router essentially always knows the MAC address, IP address and hostname of each device. Now I want to run IPv6 on this network as a first-class citizen. Since DHCPv6 is…
In what way is DNS and DHCP tightly coupled? Automatically creating A records for DHCP hosts is not normal in my experience, especially for consumer routers. If some device your using supports this it could work for IPv6 as well as devices will broadcast on the network for routers when using SLAAC I believe.
The point GP had that it won't work, then DHCPv6 is not used.