[  489.417328] netdevsim netdevsim630 eni630np1: renamed from eth1
[  489.513909] netdevsim netdevsim462 eni462np1: renamed from eth0
[  489.723040] Could not find device with ifindex 2000 in netnsfd 11
[  489.723224] Could not find netns with fd: 2000
[  489.723312] Cannot link a netdevsim to itself
[  489.723416] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).