is_deeply( \%crosslinks,
           \%crosslinkscorrect,
           "hash_comparison"
         );

##</code><code>##

t/ReadCrossLinks....NOK 1#     Failed test (t/ReadCrossLinks.t at line 32)
#     Structures begin differing at:
#          $got->{10.5.5.1}[0] = undef
#     $expected->{10.5.5.1}[0] = Does not exist
# Looks like you failed 1 tests of 1.