[  427.626031] netdevsim netdevsim437 eni437np1: renamed from eth0
[  427.627104] netdevsim netdevsim744 eni744np1: renamed from eth0
[  427.722986] Could not find device with ifindex 2000 in netnsfd 11
[  427.723071] Could not find netns with fd: 2000
[  427.723119] Cannot link a netdevsim to itself
[  427.723174] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).