[ 1243.837701][T12623] netdevsim netdevsim409 eni409np1: renamed from eth0
[ 1243.963525][T12619] netdevsim netdevsim640 eni640np1: renamed from eth1
[ 1246.702936][T12611] Could not find device with ifindex 2000 in netnsfd 11
[ 1246.704389][T12611] Could not find netns with fd: 2000
[ 1246.705623][T12611] Cannot link a netdevsim to itself
[ 1246.706706][T12611] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).