Fix flannel support on Fedora CoreOS #795
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* Fedora CoreOS now ships systemd-udev's `default.link` while Flannel relies on being able to pick its own MAC address for the `flannel.1` link for tunneled traffic to reach cni0 on the destination side, without being dropped * This change first appeared in FCOS testing-devel 32.20200624.20.1 and is the behavior going forward in FCOS since it was added to align FCOS network naming / configs with the rest of Fedora and address issues related to the default being missing * Flatcar Linux (and Container Linux) has a specific flannel.link configuration builtin, so it was not affected * coreos/fedora-coreos-tracker#574 (comment) Note: Typhoon's recommended and default CNI provider is Calico, unless `networking` is set to flannel directly.
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default.linkwhile Flannel relies on being able to pick its own MAC address forthe
flannel.1link for tunneled traffic to reach cni0 on the destination side, without being droppedNote: Typhoon's default CNI provider is Calico (recommended), unless
networkingis set to flannel directly.