[  498.902334] netdevsim netdevsim631 eni631np1: renamed from eth1
[  498.997608] netdevsim netdevsim339 eni339np1: renamed from eth0
[  499.253082] Could not find device with ifindex 2000 in netnsfd 11
[  499.253561] Could not find netns with fd: 2000
[  499.253689] Cannot link a netdevsim to itself
[  499.253832] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).