[  454.898222] netdevsim netdevsim390 eni390np1: renamed from eth0
[  454.898484] netdevsim netdevsim645 eni645np1: renamed from eth1
[  454.985120] Could not find device with ifindex 2000 in netnsfd 11
[  454.985235] Could not find netns with fd: 2000
[  454.985282] Cannot link a netdevsim to itself
[  454.985333] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).