[  822.199039][T14856] netdevsim netdevsim301 eni301np1: renamed from eth0
[  822.261925][T14859] netdevsim netdevsim748 eni748np1: renamed from eth1
[  823.199253][T14844] Could not find device with ifindex 2000 in netnsfd 11
[  823.200026][T14844] Could not find netns with fd: 2000
[  823.200607][T14844] Cannot link a netdevsim to itself
[  823.201304][T14844] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).