[  522.830215] netdevsim netdevsim645 eni645np1: renamed from eth1
[  522.927876] netdevsim netdevsim482 eni482np1: renamed from eth0
[  523.175073] Could not find device with ifindex 2000 in netnsfd 11
[  523.175289] Could not find netns with fd: 2000
[  523.175386] Cannot link a netdevsim to itself
[  523.175495] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).