[  489.025822] netdevsim netdevsim635 eni635np1: renamed from eth1
[  489.026046] netdevsim netdevsim400 eni400np1: renamed from eth0
[  489.107983] Could not find device with ifindex 2000 in netnsfd 11
[  489.108087] Could not find netns with fd: 2000
[  489.108139] Cannot link a netdevsim to itself
[  489.108207] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).