[  493.120788] netdevsim netdevsim518 eni518np1: renamed from eth1
[  493.217287] netdevsim netdevsim499 eni499np1: renamed from eth0
[  493.413676] Could not find device with ifindex 2000 in netnsfd 11
[  493.413997] Could not find netns with fd: 2000
[  493.414099] Cannot link a netdevsim to itself
[  493.414212] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).