[  473.266543] netdevsim netdevsim438 eni438np1: renamed from eth0
[  473.267212] netdevsim netdevsim579 eni579np1: renamed from eth0
[  473.345639] Could not find device with ifindex 2000 in netnsfd 11
[  473.345728] Could not find netns with fd: 2000
[  473.345769] Cannot link a netdevsim to itself
[  473.345821] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).