[  521.356678] netdevsim netdevsim690 eni690np1: renamed from eth1
[  521.454630] netdevsim netdevsim394 eni394np1: renamed from eth0
[  521.679656] Could not find device with ifindex 2000 in netnsfd 11
[  521.679821] Could not find netns with fd: 2000
[  521.679896] Cannot link a netdevsim to itself
[  521.680008] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).