[  485.924141] netdevsim netdevsim420 eni420np1: renamed from eth0
[  486.020920] netdevsim netdevsim764 eni764np1: renamed from eth1
[  486.228028] Could not find device with ifindex 2000 in netnsfd 11
[  486.228336] Could not find netns with fd: 2000
[  486.228415] Cannot link a netdevsim to itself
[  486.228506] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).