[  528.503751] netdevsim netdevsim504 eni504np1: renamed from eth0
[  528.599481] netdevsim netdevsim541 eni541np1: renamed from eth1
[  528.855624] Could not find device with ifindex 2000 in netnsfd 11
[  528.855783] Could not find netns with fd: 2000
[  528.855874] Cannot link a netdevsim to itself
[  528.855972] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).