[  479.201708] netdevsim netdevsim507 eni507np1: renamed from eth0
[  479.202373] netdevsim netdevsim516 eni516np1: renamed from eth0
[  479.282248] Could not find device with ifindex 2000 in netnsfd 11
[  479.282344] Could not find netns with fd: 2000
[  479.282390] Cannot link a netdevsim to itself
[  479.282446] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).