[  473.487253] netdevsim netdevsim273 eni273np1: renamed from eth0
[  473.487721] netdevsim netdevsim700 eni700np1: renamed from eth1
[  473.576451] Could not find device with ifindex 2000 in netnsfd 11
[  473.576515] Could not find netns with fd: 2000
[  473.576548] Cannot link a netdevsim to itself
[  473.576583] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).