[  519.152717] netdevsim netdevsim304 eni304np1: renamed from eth0
[  519.250272] netdevsim netdevsim537 eni537np1: renamed from eth1
[  519.478906] Could not find device with ifindex 2000 in netnsfd 11
[  519.479150] Could not find netns with fd: 2000
[  519.479267] Cannot link a netdevsim to itself
[  519.479393] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).