[  491.423233] netdevsim netdevsim263 eni263np1: renamed from eth0
[  491.524724] netdevsim netdevsim568 eni568np1: renamed from eth1
[  491.849963] Could not find device with ifindex 2000 in netnsfd 11
[  491.850267] Could not find netns with fd: 2000
[  491.850360] Cannot link a netdevsim to itself
[  491.850473] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).