[CentOS] sshd ipv6 logging in CentOS4

Hello folks,

Since I started using CentOS4, one thing has been bugging me: sshd's
ipv6 logging as seen here:

Failed password for root from ::ffff:83.220.130.10 port 43511 ssh2

Not a big deal, but I'd be really happy if I could get it to log in
ipv4 format like on CentOS3.

Any suggestion?

Thanks,

Francois