[  485.479910] netdevsim netdevsim506 eni506np1: renamed from eth0
[  485.480808] netdevsim netdevsim537 eni537np1: renamed from eth1
[  485.578767] Could not find device with ifindex 2000 in netnsfd 11
[  485.578860] Could not find netns with fd: 2000
[  485.578906] Cannot link a netdevsim to itself
[  485.578956] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).