[  521.684098] netdevsim netdevsim299 eni299np1: renamed from eth0
[  521.781558] netdevsim netdevsim553 eni553np1: renamed from eth1
[  522.036566] Could not find device with ifindex 2000 in netnsfd 11
[  522.036749] Could not find netns with fd: 2000
[  522.036829] Cannot link a netdevsim to itself
[  522.036932] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).