Show HN: A Short IPv6 Guide for Home IPv4 Admins
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Show HN: A Short IPv6 Guide for Home IPv4 Admins
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Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#2> Some runs of zeros can be condensed as ::.
Only one run of zeros can be condensed as :: because two or more would be ambiguous.
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#3It's weird. Personally I've yet to make the jump to IPv6 because it seems too complex, doesn't make sense, so I don't want to spend the mental effort learning it when I have no need to switch.
However, looking decades back I realise I felt the same way when first learning about and working with networks. Nothing about it is intuitive. It's all complex, until it isn't through repetition and familiarity.
That said, I still don't want to spend the mental effort on IPv6 yet. I'll deal with it when I have a need for it.
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#4> Some runs of zeros can be condensed as ::. Only one run of zeros can be condensed as :: because two or more would be ambiguous.
I believe the point the post is making is that there are some runs of zeros that can't be condensed, not that you can condense multiple runs in a single address.
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#5> After your router connects to your ISP, the router can ask for prefix delegation.
Some providers (eg: Starlink, when I last checked and a Calyx WiFi hotspot) will only advertise a prefix. I was forced to figure out a way to bring the /64 that is in front of my router (Linux iptables) and expose it to a LAN behind my router. It looks something like [1]
Depending on your setup, there may be an easier solution.
[1] http://imoverclocked.blogspot.com/2022/05/ipv6-wifi-access-p...
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#6How do you run a DNS server when your address isn't technically static?
How do clients discover the DNS server in a SLAAC environment?
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#7> Some runs of zeros can be condensed as ::. Only one run of zeros can be condensed as :: because two or more would be ambiguous.
I believe the point the post is making is that there are some runs of zeros that can't be condensed, not that you can condense multiple runs in a single address.
All runs can be, but you can pick only one, so you should do pick the longest one.
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#8How do you run a DNS server when your address isn't technically static? How do clients discover the DNS server in a SLAAC environment?
How do you run a DNS server when your address isn't technically static?
For Internet-facing DNS you don't. For your internal resolver you could create a static address within a ULA (e.g. $PREFIX::1).
How do clients discover the DNS server in a SLAAC environment?
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#9There are definitely easier ways to get IPv6 if you don't want to deal with the networking.
I feel like I'm doing a lot of plugging of IPv6.rs [1], but I guess that's a testament to just how much demand there is for IPv6.
[1] https://ipv6.rs
Re: Show HN: A Short IPv6 Guide for Home IPv4 Admins
#10How do you run a DNS server when your address isn't technically static? How do clients discover the DNS server in a SLAAC environment?
RA message can specify a DNS server.
Mine specifies the router's ULA, which is effectively static, and it runs unbounded.