[  523.063879] netdevsim netdevsim546 eni546np1: renamed from eth1
[  523.161928] netdevsim netdevsim355 eni355np1: renamed from eth0
[  523.408685] Could not find device with ifindex 2000 in netnsfd 11
[  523.408905] Could not find netns with fd: 2000
[  523.408997] Cannot link a netdevsim to itself
[  523.409099] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).