[  522.726849] netdevsim netdevsim531 eni531np1: renamed from eth1
[  522.824323] netdevsim netdevsim441 eni441np1: renamed from eth0
[  523.080825] Could not find device with ifindex 2000 in netnsfd 11
[  523.080995] Could not find netns with fd: 2000
[  523.081114] Cannot link a netdevsim to itself
[  523.081213] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).