[  488.549252] netdevsim netdevsim727 eni727np1: renamed from eth1
[  488.646113] netdevsim netdevsim457 eni457np1: renamed from eth0
[  488.850473] Could not find device with ifindex 2000 in netnsfd 11
[  488.850760] Could not find netns with fd: 2000
[  488.850850] Cannot link a netdevsim to itself
[  488.850948] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).