[  522.488023] netdevsim netdevsim597 eni597np1: renamed from eth1
[  522.585174] netdevsim netdevsim313 eni313np1: renamed from eth0
[  522.811576] Could not find device with ifindex 2000 in netnsfd 11
[  522.811744] Could not find netns with fd: 2000
[  522.811833] Cannot link a netdevsim to itself
[  522.811936] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).