[  488.622992] netdevsim netdevsim750 eni750np1: renamed from eth1
[  488.719884] netdevsim netdevsim398 eni398np1: renamed from eth0
[  488.914833] Could not find device with ifindex 2000 in netnsfd 11
[  488.915176] Could not find netns with fd: 2000
[  488.915282] Cannot link a netdevsim to itself
[  488.915415] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).