[  492.768510] netdevsim netdevsim391 eni391np1: renamed from eth0
[  492.769011] netdevsim netdevsim639 eni639np1: renamed from eth1
[  492.858326] Could not find device with ifindex 2000 in netnsfd 11
[  492.858469] Could not find netns with fd: 2000
[  492.858546] Cannot link a netdevsim to itself
[  492.858624] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).