Similar issues arise when a link fails. For example, if the link between LSRs C
and D fails and the failure is reported by the routing protocol, LSR B needs to
discover that the link to LSR F is now the preferred path and work out which
label to use.
The Address message can distribute one or more addresses belonging to
a single address family (for example, IPv4 or IPv6) but cannot mix addresses
from multiple families. The body of the Address List TLV contains a family
identifier followed by a list of addresses. Since the format of an ...
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