[  475.366971] netdevsim netdevsim456 eni456np1: renamed from eth0
[  475.368090] netdevsim netdevsim579 eni579np1: renamed from eth0
[  475.452345] Could not find device with ifindex 2000 in netnsfd 11
[  475.452414] Could not find netns with fd: 2000
[  475.452447] Cannot link a netdevsim to itself
[  475.452486] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).