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feat(robot): keep the IPv6 ExternalIP configured on a Robot node - #1340

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feat/robot-preserve-external-ipv6
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feat(robot): keep the IPv6 ExternalIP configured on a Robot node#1340
lukasmetzner wants to merge 1 commit into
mainfrom
feat/robot-preserve-external-ipv6

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@lukasmetzner

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Robot reports the IPv6 subnet assigned to a server, but not the address
the server uses within it, so we use the first address of the subnet.
That address is wrong for servers that use another address out of their
subnet, and unavailable for servers that have no subnet in Robot at all,
e.g. when IPv6 is configured on upstream network equipment instead of per
server.

Keep the IPv6 ExternalIP that is already configured on the Node object if
it is part of the subnet Robot reports, and fall back to the first address
of the subnet otherwise. If Robot reports no subnet, the configured
address is the only source and is kept as is.

Closes #1338

Robot reports the IPv6 subnet assigned to a server, but not the address
the server uses within it, so we use the first address of the subnet.
That address is wrong for servers that use another address out of their
subnet, and unavailable for servers that have no subnet in Robot at all,
e.g. when IPv6 is configured on upstream network equipment instead of per
server.

Keep the IPv6 ExternalIP that is already configured on the Node object if
it is part of the subnet Robot reports, and fall back to the first address
of the subnet otherwise. If Robot reports no subnet, the configured
address is the only source and is kept as is.

Closes #1338
@lukasmetzner
lukasmetzner requested a review from a team as a code owner August 28, 2026 12:46
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codecov Bot commented Aug 28, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.38%. Comparing base (3ec2945) to head (a29f09c).

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #1340      +/-   ##
==========================================
+ Coverage   70.27%   70.38%   +0.10%     
==========================================
  Files          29       29              
  Lines        2816     2826      +10     
==========================================
+ Hits         1979     1989      +10     
  Misses        647      647              
  Partials      190      190              
Flag Coverage Δ
e2e 44.64% <0.00%> (-0.26%) ⬇️
unit 66.87% <100.00%> (+0.18%) ⬆️

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feat(robot): allow providing the actual IPv6 address of a Robot node

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