[  473.194770] netdevsim netdevsim540 eni540np1: renamed from eth1
[  473.195273] netdevsim netdevsim284 eni284np1: renamed from eth0
[  473.268603] Could not find device with ifindex 2000 in netnsfd 11
[  473.268684] Could not find netns with fd: 2000
[  473.268728] Cannot link a netdevsim to itself
[  473.268779] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).