[  521.721881] netdevsim netdevsim617 eni617np1: renamed from eth1
[  521.819527] netdevsim netdevsim498 eni498np1: renamed from eth0
[  522.038808] Could not find device with ifindex 2000 in netnsfd 11
[  522.039021] Could not find netns with fd: 2000
[  522.039129] Cannot link a netdevsim to itself
[  522.039246] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).