[ 1011.880343][T12685] netdevsim netdevsim639 eni639np1: renamed from eth1
[ 1011.977563][T12735] netdevsim netdevsim508 eni508np1: renamed from eth0
[ 1013.783771][T12730] Could not find device with ifindex 2000 in netnsfd 11
[ 1013.784800][T12730] Could not find netns with fd: 2000
[ 1013.785555][T12730] Cannot link a netdevsim to itself
[ 1013.792605][T12730] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).