[  473.518912] netdevsim netdevsim503 eni503np1: renamed from eth0
[  473.519457] netdevsim netdevsim646 eni646np1: renamed from eth1
[  473.589749] Could not find device with ifindex 2000 in netnsfd 11
[  473.589846] Could not find netns with fd: 2000
[  473.589893] Cannot link a netdevsim to itself
[  473.589950] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).