[  521.817162] netdevsim netdevsim629 eni629np1: renamed from eth1
[  521.915199] netdevsim netdevsim481 eni481np1: renamed from eth0
[  522.084901] Could not find device with ifindex 2000 in netnsfd 11
[  522.085043] Could not find netns with fd: 2000
[  522.085113] Cannot link a netdevsim to itself
[  522.085199] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).