[  457.169781] netdevsim netdevsim455 eni455np1: renamed from eth0
[  457.171033] netdevsim netdevsim603 eni603np1: renamed from eth1
[  457.269348] Could not find device with ifindex 2000 in netnsfd 11
[  457.269465] Could not find netns with fd: 2000
[  457.269518] Cannot link a netdevsim to itself
[  457.269585] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).