fix: reject MAC addresses with mixed separators #432
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Add validation to prevent MAC addresses that use both ':' and '-' separators simultaneously, ensuring consistent separator usage as per MAC address format standards.
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Previously, the MAC address validator would accept invalid MAC addresses that mixed different separators, such as
aa:bb-cc-dd:ee:ff, but a valid MAC address should use consistent separators throughout.This PR improves the MAC address validator by adding a check to reject MAC addresses that use mixed separators (both
:and-characters).