#Homelab/#Networking question: I just realise that 'setting a static #IPv6 address' on a (#Linux) server is not as simple as it'd be with #IPv4 - one of the reasons being, realising, that the address prefix changes when my router restarts (i.e. due to any configuration changes).

When that network address prefix changes, obviously, any 'static' IPv6 address I'd like to set for my server would just be rendered invalid, since the network address portion/prefix is no longer applicable.

On my #TP-Link router, under IPv6 LAN settings, I saw an option to configure the Address Prefix - however, this field is currently prefilled with the network address prefix my servers/client devices are currently using/assigned to, and it is immutable (not configurable). To make it configurable, I could set a different setting on the same page called Prefix Delegation to Disable instead of its default, Enable.

My idea is to disable it, set an address prefix, and save/apply it - my expectation is, after the router restarts, all IPv6 addresses on my network will have that prefix, and it'll never change unless I explicitly do so (again, on the router). Is my idea right? or am I getting it tooootally wrong (which is possible bcos IPv6 is something else)?

This may sound like a dumb question, but with IPv6 am I supposed to ... learn the addresses like I have for IPv4?

With IPv4 I feel as if I have had a reasonable chance of learning some of the important blocks, but with IPv6... I genuinely hesitate to "adopt" because I fear having to learn the new addressing scheme.

If not, how should I ... "think" about IPv6 coming from the perspective of actually knowing IPv4-addresses?

If, like me, you've ever been annoyed at people just saying to grep the output of ifconfig for inet, and the likes, to get the assigned IP address of a network interface.

I got annoyed one time too many.

Have a *proper* solution.

May or may not also work on for example the *BSDs, but should definitely work on any modern typical-userland Linux.

https://michael.kjorling.se/blog/2025/ip-address-of-network-interface-linux/

Yes, The Book of PF, 4th Edition Is Coming Soon https://nxdomain.no/~peter/yes_the_book_of_pf_4th_ed_is_coming.html

Long rumored and eagerly anticipated by some, the fourth edition of The Book of PF is now available for preorder https://nostarch.com/book-of-pf-4th-edition #openbsd #pf #packetfilter #freebsd #networking #security #tcpip #ipv6 #ipv4 #bookofpf

... and of course somebody had to ask, "when can we expect a fifth edition", to which the answer was "let's get this one out the door first"

That said, watch this space for further announcements!

So, #OpenAI thinks they are developing the next big thing that will replace everything else?
You know what they still can't even implement and replace? #IPv4 with #IPv6, their website is still IPv4 only, lol.

When will we stop using #IPv4 on #Peering LANs and avoid the messy renumberings? #IPv6 #Extended-Nexthop #RFC5549

After going through https://bgp.tools/transfer-history/?org=Amazon.com%2c%20Inc. , it feels like Amazon has always been buying all the larger IPv4 blocks.

Seriously people, if you're ipv6 enabled its only a matter of months before more than half your global traffic will be #ipv6. Stop writing software and documentation that assumes IP addresses are #ipv4 only.

People are stuck in 2010 because they're just not paying attention and shit is happening fast.

#ipv4
#rip
https://labs.ripe.net/media/documents/The_State_of_IPv4_Report.pdf

"Participants in the interviews conducted by NEXOP
said they believed that IPv4 will remain the primary
protocol for Internet connectivity for the next
decade or two. This prevailing sentiment highlights
the perceived necessity of IPv4 for most Internet
users in the foreseeable future. Many operators
also thought that the complexity of deploying IPv6
in large networks was underestimated."

Kennt ihr günstige #Hoster für #colocation in #frankfurt ? Ich stelle immer wieder fest, dass #firstColo doch recht teuer ist und aktruell liegt die #Rechnung bei 136€/Monat. Ab August wird es zwar günstiger, weil ich ein ungenutzes #ipv4 Netz gekündigt habe, aber für 1HE ... suche ich etwas, dass günstiger ist.

IPv4 exhaustion is real. So how are networks coping?

Our latest IP report dives into the rise of IPv4 transfers, trends in pricing and availability, and what it all means for the Internet’s future.

Read the full report: https://labs.ripe.net/media/documents/The_State_of_IPv4_Report.pdf

Do you think IPv4 transfers have become a crucial lifeline in the wake of address space exhaustion?