[  703.262153][T13066] netdevsim netdevsim421 eni421np1: renamed from eth0
[  703.275114][T13068] netdevsim netdevsim743 eni743np1: renamed from eth1
[  703.926796][T13054] Could not find device with ifindex 2000 in netnsfd 11
[  703.927710][T13054] Could not find netns with fd: 2000
[  703.928110][T13054] Cannot link a netdevsim to itself
[  703.928569][T13054] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).