OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10864
Crash type: Heap-use-after-free READ 4
Crash state:
TunnelIPv6Interface::remove_address
nl::wpantund::NCPInstanceBase::unicast_address_was_removed
nl::wpantund::NCPInstanceBase::on_mesh_prefix_was_removed