[  524.389760] netdevsim netdevsim516 eni516np1: renamed from eth1
[  524.487151] netdevsim netdevsim506 eni506np1: renamed from eth0
[  524.720199] Could not find device with ifindex 2000 in netnsfd 11
[  524.720362] Could not find netns with fd: 2000
[  524.720435] Cannot link a netdevsim to itself
[  524.720523] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).