[  487.680266] netdevsim netdevsim423 eni423np1: renamed from eth0
[  487.776768] netdevsim netdevsim525 eni525np1: renamed from eth1
[  488.010234] Could not find device with ifindex 2000 in netnsfd 11
[  488.010661] Could not find netns with fd: 2000
[  488.010738] Cannot link a netdevsim to itself
[  488.010825] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).