[  486.532409] netdevsim netdevsim335 eni335np1: renamed from eth0
[  486.532938] netdevsim netdevsim648 eni648np1: renamed from eth1
[  486.624806] Could not find device with ifindex 2000 in netnsfd 11
[  486.624954] Could not find netns with fd: 2000
[  486.625069] Cannot link a netdevsim to itself
[  486.625195] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).