[  512.591840] netdevsim netdevsim499 eni499np1: renamed from eth0
[  512.689786] netdevsim netdevsim516 eni516np1: renamed from eth1
[  512.894118] Could not find device with ifindex 2000 in netnsfd 11
[  512.894265] Could not find netns with fd: 2000
[  512.894337] Cannot link a netdevsim to itself
[  512.894425] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).