[  522.489569] netdevsim netdevsim523 eni523np1: renamed from eth1
[  522.586790] netdevsim netdevsim398 eni398np1: renamed from eth0
[  522.821905] Could not find device with ifindex 2000 in netnsfd 11
[  522.822114] Could not find netns with fd: 2000
[  522.822232] Cannot link a netdevsim to itself
[  522.822359] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).