[  473.553936] netdevsim netdevsim506 eni506np1: renamed from eth0
[  473.554719] netdevsim netdevsim549 eni549np1: renamed from eth1
[  473.640385] Could not find device with ifindex 2000 in netnsfd 11
[  473.640517] Could not find netns with fd: 2000
[  473.640626] Cannot link a netdevsim to itself
[  473.640752] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).