[  473.363745] netdevsim netdevsim681 eni681np1: renamed from eth1
[  473.364027] netdevsim netdevsim473 eni473np1: renamed from eth0
[  473.441778] Could not find device with ifindex 2000 in netnsfd 11
[  473.441861] Could not find netns with fd: 2000
[  473.441911] Cannot link a netdevsim to itself
[  473.441961] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).