[  485.269801] netdevsim netdevsim312 eni312np1: renamed from eth0
[  485.371674] netdevsim netdevsim756 eni756np1: renamed from eth1
[  485.761263] Could not find device with ifindex 2000 in netnsfd 11
[  485.761438] Could not find netns with fd: 2000
[  485.761521] Cannot link a netdevsim to itself
[  485.761630] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).