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# rke2a
adamant-kite-43734
05/09/2023, 10:39 AMThis message was deleted.
k
kind-air-74358
05/10/2023, 3:12 PMAre you actually using NSX-t with VMWare?
p
powerful-elephant-25838
05/11/2023, 5:41 PMNo we are using nsx-v
k
kind-air-74358
05/11/2023, 6:52 PMWe had some similar issues on our side using nsx-t. We still don’t have a clear understanding of the issue, but it looks that this command will somehow fix it:
ethtool -K cilium_vxlan tx-checksum-ip-generic offkind-air-74358
05/11/2023, 6:53 PM(So not a very good fix unfortunatly)
kind-air-74358
05/11/2023, 6:54 PMAnd we verified it also against an RKE2 with Cilium on Ubuntu 22.04 on vSphere 8 without nsx-t which is working fine as far as I can tell now
p
powerful-elephant-25838
05/11/2023, 6:56 PMgot this from cilium slack: https://docs.cilium.io/en/stable/operations/system_requirements/#systemd-based-distributions
k
kind-air-74358
05/11/2023, 6:58 PMI’ll give this a look tomorrow. Thanks for the link
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p
powerful-elephant-25838
05/11/2023, 6:59 PMI will also try it in the next days, we have other activities scheduled and for now we reverted to 20.04 that works smoothly
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a
acoustic-addition-45641
05/15/2023, 6:11 PMRan into this same issue today. Ran the "ethtool -K cilium_vxlan tx-checksum-ip-generic off" command, and the Cilium connectivity test passes.
This was after making the adjustments to account for foreign routes in Ubuntu 22.04 (before installing RKE2+Cilium).
By chance, did you happen to figure out how to make the ethtool changes permanent?
acoustic-addition-45641
05/15/2023, 7:34 PMAdded the command as a crontab that runs every 5 minutes. This is "good enough" for now. Hopefully VMWare will resolve this at some point.
k
kind-air-74358
05/16/2023, 6:59 AMNo unfortunately we didn’t found a solution yet. One possible solution is mention is this thread: https://github.com/projectcalico/calico/issues/4727. But not tested the change of vxlan port yet
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p
powerful-elephant-25838
05/24/2023, 12:23 PMtested it and seems that setting "tunnelPort: 4789" make it work; we have VMWare with nsx
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