[  473.073730] netdevsim netdevsim277 eni277np1: renamed from eth0
[  473.074877] netdevsim netdevsim665 eni665np1: renamed from eth0
[  473.152610] Could not find device with ifindex 2000 in netnsfd 11
[  473.152758] Could not find netns with fd: 2000
[  473.152865] Cannot link a netdevsim to itself
[  473.152997] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).