[  522.213779] netdevsim netdevsim519 eni519np1: renamed from eth1
[  522.311205] netdevsim netdevsim353 eni353np1: renamed from eth0
[  522.540090] Could not find device with ifindex 2000 in netnsfd 11
[  522.540250] Could not find netns with fd: 2000
[  522.540343] Cannot link a netdevsim to itself
[  522.540433] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).