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L2-announcements lack ipv6-support #28985

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jonasbartho opened this issue Nov 5, 2023 · 7 comments
Open

L2-announcements lack ipv6-support #28985

jonasbartho opened this issue Nov 5, 2023 · 7 comments
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feature/ipv6 Relates to IPv6 protocol support feature/l2-announcement help-wanted Please volunteer for this by adding yourself as an assignee! kind/feature This introduces new functionality. pinned These issues are not marked stale by our issue bot. sig/agent Cilium agent related. sig/datapath Impacts bpf/ or low-level forwarding details, including map management and monitor messages.

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@jonasbartho
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jonasbartho commented Nov 5, 2023

Is your proposed feature related to a problem?

Yes, I do not want to use MetalLB when using the Cilium-network stack in k8s. When using Cilium's L2-announcements, it seems very pointless to use MetalLB additionally in this scenario just for ipv6.(then I could drop L2-announcements all-together and use MetalLB instead)

Describe the feature you'd like

One of the following limitations of L2-announcements states the following:

The feature currently does not support IPv6/NDP.

Is there any way to assign somebody to fix this? This would lead to a lot of people dropping using MetalLB(me included).

@jonasbartho jonasbartho added the kind/feature This introduces new functionality. label Nov 5, 2023
@aditighag
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/cc @dylandreimerink Not sure if this falls under sig/agent or sig/datapath.

@dylandreimerink
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dylandreimerink commented Nov 6, 2023

Not sure if this falls under sig/agent or sig/datapath.

Both, to implement this we need to add

  • gratuitous ICMPv6 advertisements (if that exists) in the agents
  • logic in the agent to reconcile IPv6 IPs to a new map
  • a new reponder map
  • and the datapath logic to respond to the ICMPv6 equivalent of arp queries, based on IPs in the responder map.

@dylandreimerink dylandreimerink added sig/datapath Impacts bpf/ or low-level forwarding details, including map management and monitor messages. sig/agent Cilium agent related. labels Nov 6, 2023
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github-actions bot commented Jan 6, 2024

This issue has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.

@github-actions github-actions bot added the stale The stale bot thinks this issue is old. Add "pinned" label to prevent this from becoming stale. label Jan 6, 2024
@PKizzle
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PKizzle commented Jan 6, 2024

Is there any news regarding this issue? I do not think it should go stale.

@github-actions github-actions bot removed the stale The stale bot thinks this issue is old. Add "pinned" label to prevent this from becoming stale. label Jan 7, 2024
@YutaroHayakawa
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Let me pin this issue. Also, contribution is appreciated.

@YutaroHayakawa YutaroHayakawa added help-wanted Please volunteer for this by adding yourself as an assignee! pinned These issues are not marked stale by our issue bot. labels Jan 8, 2024
@julianwiedmann julianwiedmann added the feature/ipv6 Relates to IPv6 protocol support label Feb 20, 2024
attilaolah added a commit to dorn-haus/ops that referenced this issue Mar 7, 2024
It is only used when L2 announcements are enabled, which are not, due to
this bug: cilium/cilium#28985
@maxpain
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maxpain commented Mar 7, 2024

Any ETA for this?

@margamanterola
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This issue has no assignee, which means that nobody is working on this issue at the moment and there is no ETA. As Yutaro mentioned, contributions are appreciated.

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Labels
feature/ipv6 Relates to IPv6 protocol support feature/l2-announcement help-wanted Please volunteer for this by adding yourself as an assignee! kind/feature This introduces new functionality. pinned These issues are not marked stale by our issue bot. sig/agent Cilium agent related. sig/datapath Impacts bpf/ or low-level forwarding details, including map management and monitor messages.
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