[  490.454522] netdevsim netdevsim610 eni610np1: renamed from eth1
[  490.550261] netdevsim netdevsim391 eni391np1: renamed from eth0
[  490.757300] Could not find device with ifindex 2000 in netnsfd 11
[  490.757501] Could not find netns with fd: 2000
[  490.757574] Cannot link a netdevsim to itself
[  490.757662] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).