[  512.409951] netdevsim netdevsim400 eni400np1: renamed from eth0
[  512.507075] netdevsim netdevsim525 eni525np1: renamed from eth1
[  512.741393] Could not find device with ifindex 2000 in netnsfd 11
[  512.741581] Could not find netns with fd: 2000
[  512.741658] Cannot link a netdevsim to itself
[  512.741749] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).