[  516.788801] netdevsim netdevsim290 eni290np1: renamed from eth0
[  516.887490] netdevsim netdevsim643 eni643np1: renamed from eth1
[  517.086799] Could not find device with ifindex 2000 in netnsfd 11
[  517.086975] Could not find netns with fd: 2000
[  517.087074] Cannot link a netdevsim to itself
[  517.087166] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).