[  758.538174][T14735] netdevsim netdevsim503 eni503np1: renamed from eth0
[  758.545698][T14737] netdevsim netdevsim635 eni635np1: renamed from eth1
[  759.065800][T14723] Could not find device with ifindex 2000 in netnsfd 11
[  759.066403][T14723] Could not find netns with fd: 2000
[  759.066856][T14723] Cannot link a netdevsim to itself
[  759.067402][T14723] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).