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Validate when Cilium is in ENI mode that IPv4 is enabled #11272
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area/eniImpacts ENI based IPAM.Impacts ENI based IPAM.area/miscImpacts miscellaneous areas of the code not otherwise owned by another area.Impacts miscellaneous areas of the code not otherwise owned by another area.good-first-issueGood starting point for new developers, which requires minimal understanding of Cilium.Good starting point for new developers, which requires minimal understanding of Cilium.help-wantedYou can help! Post a detailed plan on the issue or create a PR to solve this issue.You can help! Post a detailed plan on the issue or create a PR to solve this issue.integration/cloudRelated to integration with cloud environments such as AKS, EKS, GKE, etc.Related to integration with cloud environments such as AKS, EKS, GKE, etc.kind/enhancementThis would improve or streamline existing functionality.This would improve or streamline existing functionality.
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area/eniImpacts ENI based IPAM.Impacts ENI based IPAM.area/miscImpacts miscellaneous areas of the code not otherwise owned by another area.Impacts miscellaneous areas of the code not otherwise owned by another area.good-first-issueGood starting point for new developers, which requires minimal understanding of Cilium.Good starting point for new developers, which requires minimal understanding of Cilium.help-wantedYou can help! Post a detailed plan on the issue or create a PR to solve this issue.You can help! Post a detailed plan on the issue or create a PR to solve this issue.integration/cloudRelated to integration with cloud environments such as AKS, EKS, GKE, etc.Related to integration with cloud environments such as AKS, EKS, GKE, etc.kind/enhancementThis would improve or streamline existing functionality.This would improve or streamline existing functionality.
Currently, ENI mode is only supported with IPv4. Many places in the code assume IPv4 when in ENI mode. This might break subtly if Cilium has IPv4 disabled. We should have some validation in place to prevent any issues.
Reference: https://docs.cilium.io/en/v1.7/gettingstarted/aws-eni/?highlight=eni%20ipv4#limitations
From: #11163 (comment)