LIKE with macaddr types

All,

I want to do a LIKE on a column of type macaddr, looking (for example) for
all MAC addresses with the prefix "00:80", and so on. There's no ~~ operator
for macaddr though... I tried casting macaddr to text, but that's undefined
apparently (WTF?) - any ideas?

Regards,
Phil

+----------------------------------+
| Phil Mayers, Network Support     |
| Centre for Computing Services    |
| Imperial College                 |
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