[  520.013173] netdevsim netdevsim741 eni741np1: renamed from eth1
[  520.112216] netdevsim netdevsim404 eni404np1: renamed from eth0
[  520.386582] Could not find device with ifindex 2000 in netnsfd 11
[  520.386772] Could not find netns with fd: 2000
[  520.386845] Cannot link a netdevsim to itself
[  520.386943] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).