[  522.141691] netdevsim netdevsim657 eni657np1: renamed from eth1
[  522.238549] netdevsim netdevsim403 eni403np1: renamed from eth0
[  522.458162] Could not find device with ifindex 2000 in netnsfd 11
[  522.458333] Could not find netns with fd: 2000
[  522.458416] Cannot link a netdevsim to itself
[  522.458525] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).