[  521.942635] netdevsim netdevsim624 eni624np1: renamed from eth1
[  522.040666] netdevsim netdevsim435 eni435np1: renamed from eth0
[  522.292258] Could not find device with ifindex 2000 in netnsfd 11
[  522.292481] Could not find netns with fd: 2000
[  522.292590] Cannot link a netdevsim to itself
[  522.292700] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).