[  843.957608][T14750] netdevsim netdevsim471 eni471np1: renamed from eth0
[  843.972628][T14752] netdevsim netdevsim731 eni731np1: renamed from eth1
[  844.628056][T14738] Could not find device with ifindex 2000 in netnsfd 11
[  844.628959][T14738] Could not find netns with fd: 2000
[  844.629390][T14738] Cannot link a netdevsim to itself
[  844.629829][T14738] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).