[  522.725179] netdevsim netdevsim541 eni541np1: renamed from eth1
[  522.822185] netdevsim netdevsim507 eni507np1: renamed from eth0
[  523.076951] Could not find device with ifindex 2000 in netnsfd 11
[  523.077141] Could not find netns with fd: 2000
[  523.077252] Cannot link a netdevsim to itself
[  523.077388] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).