[  486.961508] netdevsim netdevsim757 eni757np1: renamed from eth1
[  487.057876] netdevsim netdevsim423 eni423np1: renamed from eth0
[  487.301464] Could not find device with ifindex 2000 in netnsfd 11
[  487.301869] Could not find netns with fd: 2000
[  487.301994] Cannot link a netdevsim to itself
[  487.302130] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).