[  487.338138] netdevsim netdevsim337 eni337np1: renamed from eth0
[  487.338479] netdevsim netdevsim712 eni712np1: renamed from eth1
[  487.425557] Could not find device with ifindex 2000 in netnsfd 11
[  487.425645] Could not find netns with fd: 2000
[  487.425686] Cannot link a netdevsim to itself
[  487.425736] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).