[ 1236.153383][T12793] netdevsim netdevsim309 eni309np1: renamed from eth0
[ 1236.282497][T12792] netdevsim netdevsim536 eni536np1: renamed from eth1
[ 1238.996092][T12781] Could not find device with ifindex 2000 in netnsfd 11
[ 1238.997277][T12781] Could not find netns with fd: 2000
[ 1238.998156][T12781] Cannot link a netdevsim to itself
[ 1238.999358][T12781] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).