[  518.720302] netdevsim netdevsim309 eni309np1: renamed from eth0
[  518.817710] netdevsim netdevsim728 eni728np1: renamed from eth1
[  519.046128] Could not find device with ifindex 2000 in netnsfd 11
[  519.046285] Could not find netns with fd: 2000
[  519.046357] Cannot link a netdevsim to itself
[  519.046443] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).