NAT to LB IP in 13x works fine, in 14x it breaks

[Tipsmark]

MetalLB Version

13.12

Deployment method

Charts

Main CNI

Cilium

Kubernetes Version

1.28,1.29,1.30

Cluster Distribution

vanilla

Describe the bug

NAT to LB IP as specified via annotation stops working when upgrading beyond v13.x

To Reproduce

Configure SVC with LB IP, NAT a WAN IP to it, test then upgrade metallb to 14x = game over

Expected Behavior

NAT should still work

Additional Context

frr.enabled=false Only non-default setting

valuesInline: controller: resources: limits: memory: 100Mi speaker: resources: limits: memory: 100Mi frr: enabled: false

I've read and agree with the following

• [X] I've checked all open and closed issues and my request is not there.
• [X] I've checked all open and closed pull requests and my request is not there.

I've read and agree with the following

• [X] I've checked all open and closed issues and my issue is not there.
• [X] This bug is reproducible when deploying MetalLB from the main branch
• [X] I have read the troubleshooting guide and I am still not able to make it work
• [X] I checked the logs and MetalLB is not discarding the configuration as not valid
• [X] I enabled the debug logs, collected the information required from the cluster using the collect script and will attach them to the issue
• [X] I will provide the definition of my service and the related endpoint slices and attach them to this issue

[fedepaol]

NAT to LB IP as specified via annotation stops working when upgrading beyond v13.x

what annotations? Can you clarify what you are trying to do and what's not working? Also, given it's 13 vs 14, I'd suggest checking https://github.com/metallb/metallb/issues/2285