[  483.435157] netdevsim netdevsim337 eni337np1: renamed from eth0
[  483.436059] netdevsim netdevsim706 eni706np1: renamed from eth1
[  483.525816] Could not find device with ifindex 2000 in netnsfd 11
[  483.525948] Could not find netns with fd: 2000
[  483.526054] Cannot link a netdevsim to itself
[  483.526168] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).