[  762.995368][T14770] netdevsim netdevsim505 eni505np1: renamed from eth0
[  763.000401][T14772] netdevsim netdevsim685 eni685np1: renamed from eth1
[  763.572608][T14758] Could not find device with ifindex 2000 in netnsfd 11
[  763.573154][T14758] Could not find netns with fd: 2000
[  763.573518][T14758] Cannot link a netdevsim to itself
[  763.574301][T14758] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).