[  520.544374] netdevsim netdevsim398 eni398np1: renamed from eth0
[  520.640958] netdevsim netdevsim747 eni747np1: renamed from eth1
[  520.894331] Could not find device with ifindex 2000 in netnsfd 11
[  520.894541] Could not find netns with fd: 2000
[  520.894619] Cannot link a netdevsim to itself
[  520.894725] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).