[  489.360186] netdevsim netdevsim423 eni423np1: renamed from eth0
[  489.457333] netdevsim netdevsim731 eni731np1: renamed from eth1
[  489.680112] Could not find device with ifindex 2000 in netnsfd 11
[  489.680477] Could not find netns with fd: 2000
[  489.680617] Cannot link a netdevsim to itself
[  489.680770] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).