[  484.935044] netdevsim netdevsim321 eni321np1: renamed from eth0
[  484.936026] netdevsim netdevsim688 eni688np1: renamed from eth1
[  485.035053] Could not find device with ifindex 2000 in netnsfd 11
[  485.035205] Could not find netns with fd: 2000
[  485.035310] Cannot link a netdevsim to itself
[  485.035424] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).