[  486.279897] netdevsim netdevsim504 eni504np1: renamed from eth0
[  486.280853] netdevsim netdevsim655 eni655np1: renamed from eth1
[  486.363639] Could not find device with ifindex 2000 in netnsfd 11
[  486.363786] Could not find netns with fd: 2000
[  486.363886] Cannot link a netdevsim to itself
[  486.364008] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).