[  517.857790] netdevsim netdevsim615 eni615np1: renamed from eth1
[  517.955164] netdevsim netdevsim441 eni441np1: renamed from eth0
[  518.221246] Could not find device with ifindex 2000 in netnsfd 11
[  518.221492] Could not find netns with fd: 2000
[  518.221619] Cannot link a netdevsim to itself
[  518.221767] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).