[  456.642541] netdevsim netdevsim467 eni467np1: renamed from eth0
[  456.643835] netdevsim netdevsim746 eni746np1: renamed from eth1
[  456.739082] Could not find device with ifindex 2000 in netnsfd 11
[  456.739220] Could not find netns with fd: 2000
[  456.739274] Cannot link a netdevsim to itself
[  456.739336] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).