[  837.679141][T15785] netdevsim netdevsim300 eni300np1: renamed from eth0
[  837.694594][T15787] netdevsim netdevsim729 eni729np1: renamed from eth1
[  838.307680][T15774] Could not find device with ifindex 2000 in netnsfd 11
[  838.308210][T15774] Could not find netns with fd: 2000
[  838.308896][T15774] Cannot link a netdevsim to itself
[  838.309319][T15774] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).