release-22.2:Backport!6742

Merged bee26 requested to merge cherry-pick-1cd2a1e1 into release-22.2

Fix 3Com.SuperStack3_4500.get_mac_address_table script

See merge request !6742 (merged)

(cherry picked from commit 1cd2a1e1)

41e65156 Fix 3Com.SuperStack3_4500.get_mac_address_table script

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