[  522.053748] netdevsim netdevsim449 eni449np1: renamed from eth0
[  522.150792] netdevsim netdevsim673 eni673np1: renamed from eth1
[  522.377061] Could not find device with ifindex 2000 in netnsfd 11
[  522.377261] Could not find netns with fd: 2000
[  522.377340] Cannot link a netdevsim to itself
[  522.377441] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).