[  472.147269] netdevsim netdevsim645 eni645np1: renamed from eth1
[  472.147556] netdevsim netdevsim485 eni485np1: renamed from eth0
[  472.229797] Could not find device with ifindex 2000 in netnsfd 11
[  472.229944] Could not find netns with fd: 2000
[  472.230061] Cannot link a netdevsim to itself
[  472.230176] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).