[  515.965726] netdevsim netdevsim728 eni728np1: renamed from eth1
[  516.063090] netdevsim netdevsim257 eni257np1: renamed from eth0
[  516.283142] Could not find device with ifindex 2000 in netnsfd 11
[  516.283412] Could not find netns with fd: 2000
[  516.283537] Cannot link a netdevsim to itself
[  516.283678] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).