[  521.929774] netdevsim netdevsim677 eni677np1: renamed from eth1
[  522.027017] netdevsim netdevsim311 eni311np1: renamed from eth0
[  522.251053] Could not find device with ifindex 2000 in netnsfd 11
[  522.251263] Could not find netns with fd: 2000
[  522.251354] Cannot link a netdevsim to itself
[  522.251471] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).