[  487.211132] netdevsim netdevsim334 eni334np1: renamed from eth0
[  487.212229] netdevsim netdevsim720 eni720np1: renamed from eth1
[  487.301484] Could not find device with ifindex 2000 in netnsfd 11
[  487.301572] Could not find netns with fd: 2000
[  487.301625] Cannot link a netdevsim to itself
[  487.301675] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).