[  510.153475] netdevsim netdevsim751 eni751np1: renamed from eth1
[  510.250863] netdevsim netdevsim455 eni455np1: renamed from eth0
[  510.449643] Could not find device with ifindex 2000 in netnsfd 11
[  510.449817] Could not find netns with fd: 2000
[  510.449919] Cannot link a netdevsim to itself
[  510.450015] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).