[  520.524892] netdevsim netdevsim707 eni707np1: renamed from eth1
[  520.623008] netdevsim netdevsim445 eni445np1: renamed from eth0
[  520.849527] Could not find device with ifindex 2000 in netnsfd 11
[  520.849688] Could not find netns with fd: 2000
[  520.849765] Cannot link a netdevsim to itself
[  520.849865] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).