[  455.241835] netdevsim netdevsim510 eni510np1: renamed from eth0
[  455.242401] netdevsim netdevsim575 eni575np1: renamed from eth1
[  455.326260] Could not find device with ifindex 2000 in netnsfd 11
[  455.326424] Could not find netns with fd: 2000
[  455.326529] Cannot link a netdevsim to itself
[  455.326676] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).