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Cisco Mac Address Regex

Reference post.....I needed to match a cisco format mac address, not the best, but it works...

String: 0000.0c07.ac01 
Matching regex: ([0-9A-Fa-f]){4}\.([0-9A-Fa-f]){4}\.([0-9A-Fa-f]){4} String: 00:00:0c:07:ac:01 
Matching regex: ([0-9A-Fa-f]){2}\:([0-9A-Fa-f]){2}\:([0-9A-Fa-f]){2}\:([0-9A-Fa-f]){2}\:([0-9A-Fa-f]){2}\:([0-9A-Fa-f]){2}