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<?php preg_match('#^/vendorLookup/search/(?P<mac>(?:[[:xdigit:]]{2}([-:]))(?:[[:xdigit:]]{2}\2){4}[[:xdigit:]]{2})$#s', '/vendorLookup/search/aa:aa:aa:aa:aa:aa', $match); var_dump($match);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> string(38) "/vendorLookup/search/aa:aa:aa:aa:aa:aa" ["mac"]=> string(17) "aa:aa:aa:aa:aa:aa" [1]=> string(17) "aa:aa:aa:aa:aa:aa" [2]=> string(1) ":" }

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