[  520.540524] netdevsim netdevsim257 eni257np1: renamed from eth0
[  520.636754] netdevsim netdevsim539 eni539np1: renamed from eth1
[  520.884187] Could not find device with ifindex 2000 in netnsfd 11
[  520.884363] Could not find netns with fd: 2000
[  520.884441] Cannot link a netdevsim to itself
[  520.884533] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).