[  495.248531] netdevsim netdevsim756 eni756np1: renamed from eth1
[  495.344047] netdevsim netdevsim285 eni285np1: renamed from eth0
[  495.590652] Could not find device with ifindex 2000 in netnsfd 11
[  495.591030] Could not find netns with fd: 2000
[  495.591137] Cannot link a netdevsim to itself
[  495.591255] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).