[  473.039576] netdevsim netdevsim303 eni303np1: renamed from eth0
[  473.040501] netdevsim netdevsim715 eni715np1: renamed from eth1
[  473.117891] Could not find device with ifindex 2000 in netnsfd 11
[  473.118054] Could not find netns with fd: 2000
[  473.118173] Cannot link a netdevsim to itself
[  473.118303] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).