Optionaloptname: stringthe option name to check
true, if optname is valid Note that nm_ethtool_optname_is_feature() was first added to the libnm header files in 1.14.0 but forgot to actually add to the library. This happened belatedly in 1.20.0 and the stable versions 1.18.2, 1.16.4 and 1.14.8 (with linker version "libnm_1_14_8").
Checks whether
optnameis a valid option name for an offload feature.