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Missing 10G interface on Intel 82599/X520: enabling allow_unsupported_sfp persistently on CentOS and Ubuntu
A Linux server with an Intel 82599ES 10-Gigabit SFI/SFP+ controller showed no 10G interface and dmesg contained failed to load because an unsupported SFP+ or QSFP module type was detected after an untested SFP+ module was inserted. The article explains that the ixgbe driver only enables modules it…