[  473.182123] netdevsim netdevsim273 eni273np1: renamed from eth0
[  473.183145] netdevsim netdevsim532 eni532np1: renamed from eth1
[  473.276984] Could not find device with ifindex 2000 in netnsfd 11
[  473.277130] Could not find netns with fd: 2000
[  473.277227] Cannot link a netdevsim to itself
[  473.277337] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).