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Announce IPv6 ULA #7456

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bt90 opened this issue Mar 11, 2021 · 2 comments · Fixed by #9048
Closed

Announce IPv6 ULA #7456

bt90 opened this issue Mar 11, 2021 · 2 comments · Fixed by #9048
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enhancement New features or improvements of some kind, as opposed to a problem (bug)
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@bt90
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bt90 commented Mar 11, 2021

We announce IPv4 LAN addresses since v1.10.0(#6896). We could do the same for IPv6 unique local addresses(fc00::/7). They work without a device identifier and are comparable to IPv4 LAN addresses.

@bt90 bt90 added enhancement New features or improvements of some kind, as opposed to a problem (bug) needs-triage New issues needed to be validated labels Mar 11, 2021
@calmh calmh removed the needs-triage New issues needed to be validated label Mar 11, 2021
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bt90 commented Aug 13, 2021

This also includes fd00::/8 which is typically used to address VPN peers with IPv6.

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bt90 commented Jul 24, 2022

calmh pushed a commit that referenced this issue Aug 23, 2023
…) (#9048)

The allowed IPv4 ranges are the same as before. But we now also accept IPv6 addresses in the ULA range FC00::/7. These addresses don't require an interface identifier and are roughly equivalent to the IPv4 private ranges.

Typical usecases:

VPN interface IPs: Wireguard, OpenVPN, Tailscale, ...
fixed IPv6 LAN addressing while the provider assigns a dynamic prefix. e.g used by pihole
https://cs.opensource.google/go/go/+/refs/tags/go1.21.0:src/net/ip.go;l=146
@calmh calmh added this to the v1.24.0 milestone Aug 23, 2023
calmh added a commit to calmh/syncthing that referenced this issue Aug 29, 2023
* main:
  gui, man, authors: Update docs, translations, and contributors
  cmd/stdiscosrv: Separate HTTPS and replication certificates
  cmd/stdiscosrv: Use larger database settings
  cmd/stdiscosrv: Modernise TLS settings, remove excessive HTTP logging
  cmd/stdiscosrv: Serve compressed responses
  lib/connections: Allow IPv6 ULA in discovery announcements (fixes syncthing#7456) (syncthing#9048)
calmh added a commit to calmh/syncthing that referenced this issue Sep 1, 2023
* main: (121 commits)
  build: Update dependencies
  gui: Remove footer and move links to header (fixes syncthing#5607) (syncthing#9067)
  gui: Fix lastSeenDays error due to undefined deviceStats when adding new devices (ref syncthing#8730) (syncthing#9066)
  gui: Automatically select device ID on click (ref syncthing#8544) (syncthing#9065)
  gui: Prevent modifications when saving changes (fixes syncthing#9019) (syncthing#9063)
  gui: Show in GUI if limitBandwidthInLan is enabled (syncthing#9062)
  lib/upgrade: Enable HTTP/2 for upgrade checks (syncthing#9060)
  lib/discover: Enable HTTP/2 for global discovery requests (syncthing#9059)
  cmd/stdiscosrv: Streamline context handling
  cmd/stdiscosrv: Explicitly enable HTTP/2
  gui, man, authors: Update docs, translations, and contributors
  cmd/stdiscosrv: Separate HTTPS and replication certificates
  cmd/stdiscosrv: Use larger database settings
  cmd/stdiscosrv: Modernise TLS settings, remove excessive HTTP logging
  cmd/stdiscosrv: Serve compressed responses
  lib/connections: Allow IPv6 ULA in discovery announcements (fixes syncthing#7456) (syncthing#9048)
  lib/beacon: Check FlagRunning (syncthing#9051)
  all: Remove lib/util package (syncthing#9049)
  lib/model: Clean up index handler life cycle (fixes syncthing#9021) (syncthing#9038)
  lib/osutil, lib/upnp: Check FlagRunning (fixes syncthing#8767) (syncthing#9047)
  ...
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