Mon désapointement face à la façon dont les navigateur traitent les adresses ipv6.

Il n'est pas possible d'uilser une adresse ipv6 link-local pour contacter sur le LAN un équipement vi un navigateur :

https://bugzilla.mozilla.org/show_bug.cgi?id=700999 : WONTFIX !

Mais non ? Pourquoi ?

Et comme d'habitude curl fait les choses bien :

curl -v https://[fe80::1e561:b8ff:fe51:45cd%enp0s25]:8080

marche .... ( au certificat près ;-) )
700999 - Firefox does not appear to support IPv6 link-local addresses

RESOLVED (nobody) in Core - Networking. Last updated 2025-06-26.

On voudrait saboter l'utilisation des link-local qu'on ne s'y prendrait pas autrement.

Donc je suis en train da parcourir des forums pour m'expliquer des normes IETF et WHATWG alors que je veux juste me connecter à mon proxmox local.
ipv6 link-local in url , use case : contact a local proxmox for training purposes.

#mozilla #firefox : -1 : https://bugzilla.mozilla.org/show_bug.cgi?id=700999 : WONTFIX ! 😠

#curl : 1 : https://github.com/curl/curl/discussions/6651 JUST WORKS 🥰
700999 - Firefox does not appear to support IPv6 link-local addresses

RESOLVED (nobody) in Core - Networking. Last updated 2025-06-26.

@artlog What were the training purposes? Just trying to understand the use case, if relevant, no worries.
@adingbatponder

This is a laptop with a proxmox server (that can be) without any internet connection that will serve as a 'intarnet' , yes with a 'a' , an intranet but looking like internet.

It would provide VM accessible only on lan by using link-local ip and this is what make sure it does not conflict with any existing LAN. I wanted doing so to not have to configure anything special on trainee laptop, just plug an ethernet/USB card with a cable to a switch connected to proxmox VM and use link-local url to get a screen. Everything local.

And yes i'm quite stubborn when things can't be done the way i wanted, that's why i choose open source software : let me mess my own network ! let me be creative !
@lethedata see my answer to @adingbatponder for context.

And yes there might be other ways, i tried the ipv4 link local, but it does require to install additionnal things to standard proxmox.

ipv4 ilnk local does not have this issue, this just works, and seems to not care if same ipv4 link local can be provided to multiple interfaces so no interface scope and a quite classical ipv4....

Here i would like to have same level of usage between ipv4 and ipv6 and globally i want to move to full ipv6 everywhere.
In my limited mind, ipv6 link local address should not be that different from ipv4 link local. If ipv4 is usable somewhere like in urls, so should ipv6.

And playing with /etc/hosts and ping is interesting for ipv6 link local too : it behaves like ipv4.

Was ipv6 over-engineered at start ? For me ipv4 is a bazar, and ipv6 the cathedral...

@artlog @adingbatponder That makes sense to me and I like the solution. Without local-link you're stuck running something else on top to deal with addresses eg SLAAC for ULAs.

Always stinks when there's just one kinds dump thing standing between a working and nonworking setup. Tho I can understand their reasoning for not supporting it, I agree it's kinds dumb not to.