[  487.419303] netdevsim netdevsim449 eni449np1: renamed from eth0
[  487.516113] netdevsim netdevsim689 eni689np1: renamed from eth1
[  487.720275] Could not find device with ifindex 2000 in netnsfd 11
[  487.720517] Could not find netns with fd: 2000
[  487.720613] Cannot link a netdevsim to itself
[  487.720717] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).