/inet addr:([0-9.]+)/ never matches on the line where /Link encap/ does, so the address is not matched, and print is not reached. You can use your check only on the interface name matching, not on the whole loop.
Sorry if my advice was wrong.

In reply to Re^5: need to remove the extra line in regular expression by aitap
in thread need to remove the extra line in regular expression by ulaksh

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