[  488.014647] netdevsim netdevsim630 eni630np1: renamed from eth1
[  488.110697] netdevsim netdevsim455 eni455np1: renamed from eth0
[  488.365701] Could not find device with ifindex 2000 in netnsfd 11
[  488.366134] Could not find netns with fd: 2000
[  488.366248] Cannot link a netdevsim to itself
[  488.366366] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).