Wildcard not working in eth.addr
I'm trying to look for a potential duplicate MAC Address. I've read that the . or * is suppose to be the wildcard, but the filter isn't accepting that.
I've tried
eth.addr == 00:04:f2:ae:55:33
eth.addr == 00:04:f2:**:**:**
eth.addr == 00:04:f2:*
eth.addr == 00:04:f2:.
eth.addr == 00:04:f2:..:..:..
eth.addr == 00:04:f2:.:.:.
The filter just remains red and won't accept the filter.