[  479.025373] netdevsim netdevsim449 eni449np1: renamed from eth0
[  479.026251] netdevsim netdevsim523 eni523np1: renamed from eth1
[  479.116832] Could not find device with ifindex 2000 in netnsfd 11
[  479.116959] Could not find netns with fd: 2000
[  479.117012] Cannot link a netdevsim to itself
[  479.117077] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).