[ 1186.451284][T10982] Could not find device with ifindex 2000 in netnsfd 11
[ 1186.452125][T10982] Could not find netns with fd: 2000
[ 1186.452670][T10982] netdevsim netdevsim316 eth0: Cannot link a netdevsim to itself
[ 1186.453457][T10982] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).