[ 1234.452331][T12505] netdevsim netdevsim656 eni656np1: renamed from eth1
[ 1234.456657][T12506] netdevsim netdevsim336 eni336np1: renamed from eth0
[ 1237.207845][T12495] Could not find device with ifindex 2000 in netnsfd 11
[ 1237.209970][T12495] Could not find netns with fd: 2000
[ 1237.229729][T12495] Cannot link a netdevsim to itself
[ 1237.232267][T12495] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).