ailed Description</h2>
<div class="textblock"><p>IPv6 address scopes, zones, and scoping policy.</p>
<p>This header provides the means to implement support for IPv6 address scopes, as per RFC 4007. An address scope can be either global or more constrained. In lwIP, we say that an address "has a scope" or "is scoped" when its scope is constrained, in which case the address is meaningful only in a specific "zone." For unicast addresses, only link-local addresses have a scope; in that case, the scope is the li