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Proxmox on a Dell R720 with X520 rNDC: ixgbe allow_unsupported_sfp=1 does not take effect for Cisco SR modules
A Dell R720 with the integrated i350/X520 daughter card ran Proxmox VE; Cisco-branded 10G multimode LC SFP+ modules that worked elsewhere were rejected as unsupported. Adding options ixgbe allowunsupportedsfp=1 to the module options had no visible effect. Respondents walked through GRUB kernel…