[  602.540271][ T9807] netdevsim netdevsim501 eni501np1: renamed from eth0
[  602.544220][ T9808] netdevsim netdevsim710 eni710np1: renamed from eth1
[  603.121742][ T9793] Could not find device with ifindex 2000 in netnsfd 11
[  603.122193][ T9793] Could not find netns with fd: 2000
[  603.122560][ T9793] Cannot link a netdevsim to itself
[  603.123052][ T9793] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).