[  507.726866] netdevsim netdevsim287 eni287np1: renamed from eth0
[  507.824879] netdevsim netdevsim721 eni721np1: renamed from eth1
[  508.014635] Could not find device with ifindex 2000 in netnsfd 11
[  508.014779] Could not find netns with fd: 2000
[  508.014851] Cannot link a netdevsim to itself
[  508.014936] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).