[  477.294512] netdevsim netdevsim449 eni449np1: renamed from eth0
[  477.294832] netdevsim netdevsim664 eni664np1: renamed from eth1
[  477.399740] Could not find device with ifindex 2000 in netnsfd 11
[  477.399927] Could not find netns with fd: 2000
[  477.400090] Cannot link a netdevsim to itself
[  477.400270] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).