[  518.120988] netdevsim netdevsim321 eni321np1: renamed from eth0
[  518.218200] netdevsim netdevsim607 eni607np1: renamed from eth1
[  518.457938] Could not find device with ifindex 2000 in netnsfd 11
[  518.458124] Could not find netns with fd: 2000
[  518.458203] Cannot link a netdevsim to itself
[  518.458294] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).