[  514.656732] netdevsim netdevsim639 eni639np1: renamed from eth1
[  514.755050] netdevsim netdevsim335 eni335np1: renamed from eth0
[  514.971199] Could not find device with ifindex 2000 in netnsfd 11
[  514.971475] Could not find netns with fd: 2000
[  514.971578] Cannot link a netdevsim to itself
[  514.971678] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).