[  473.063091] netdevsim netdevsim300 eni300np1: renamed from eth0
[  473.064539] netdevsim netdevsim734 eni734np1: renamed from eth0
[  473.136139] Could not find device with ifindex 2000 in netnsfd 11
[  473.136299] Could not find netns with fd: 2000
[  473.136405] Cannot link a netdevsim to itself
[  473.136518] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).