[  522.463025] netdevsim netdevsim481 eni481np1: renamed from eth0
[  522.560493] netdevsim netdevsim609 eni609np1: renamed from eth1
[  522.776875] Could not find device with ifindex 2000 in netnsfd 11
[  522.777044] Could not find netns with fd: 2000
[  522.777144] Cannot link a netdevsim to itself
[  522.777277] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).