[  486.003730] netdevsim netdevsim337 eni337np1: renamed from eth0
[  486.004853] netdevsim netdevsim767 eni767np1: renamed from eth1
[  486.107205] Could not find device with ifindex 2000 in netnsfd 11
[  486.107318] Could not find netns with fd: 2000
[  486.107371] Cannot link a netdevsim to itself
[  486.107435] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).