How to configure freeradius to answer on two IP addresses

[Stefan A.]

All,

How may I advice freeradius, to bind to two IP addresses?
I tried the Listen option and the bind_address by separating my ip addresses
with an whitespace, a colon or a semicolon...

Just guessing around, but did not find any documentation about this issue.
I can not bind to '*' becaus on an some ip addresses, are other listeners to
1812/13



Thank you.
Stefan