[  473.079664] netdevsim netdevsim471 eni471np1: renamed from eth0
[  473.081083] netdevsim netdevsim632 eni632np1: renamed from eth0
[  473.149480] Could not find device with ifindex 2000 in netnsfd 11
[  473.149607] Could not find netns with fd: 2000
[  473.149717] Cannot link a netdevsim to itself
[  473.149830] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).