[  487.236493] netdevsim netdevsim494 eni494np1: renamed from eth0
[  487.236796] netdevsim netdevsim750 eni750np1: renamed from eth1
[  487.331806] Could not find device with ifindex 2000 in netnsfd 11
[  487.331892] Could not find netns with fd: 2000
[  487.331935] Cannot link a netdevsim to itself
[  487.331993] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).