After love, packed for Danish port (6)
I believe the answer is:
'danish port' is the definition.
(I've seen this in another clue)
'after love packed' is the wordplay.
'after' means one lot of letters go next to another.
'love' becomes 'o' (love means zero in tennis).
'packed' becomes 'dense' (I've seen this in another clue).
'o'+'dense' is 'ODENSE'.
'for' acts as a link.
(Other definitions for odense that I've seen before include "in Denmark?" , "where Canute founded a cathedral" , "foreign port?" , "Foreign city" , "Danish city" .)