[  993.500957][T12578] netdevsim netdevsim640 eni640np1: renamed from eth1
[  993.607462][T12580] netdevsim netdevsim413 eni413np1: renamed from eth0
[  995.413936][T12572] Could not find device with ifindex 2000 in netnsfd 11
[  995.415025][T12572] Could not find netns with fd: 2000
[  995.417563][T12572] Cannot link a netdevsim to itself
[  995.418367][T12572] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).