[  456.963019] netdevsim netdevsim452 eni452np1: renamed from eth0
[  456.963996] netdevsim netdevsim744 eni744np1: renamed from eth1
[  457.056626] Could not find device with ifindex 2000 in netnsfd 11
[  457.056740] Could not find netns with fd: 2000
[  457.056786] Cannot link a netdevsim to itself
[  457.056837] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).