[  633.565833][ T9804] netdevsim netdevsim669 eni669np1: renamed from eth1
[  633.578615][ T9806] netdevsim netdevsim293 eni293np1: renamed from eth0
[  634.204508][ T9793] Could not find device with ifindex 2000 in netnsfd 11
[  634.205377][ T9793] Could not find netns with fd: 2000
[  634.205875][ T9793] Cannot link a netdevsim to itself
[  634.206406][ T9793] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).