Problem with resolving hostnames to ipv6 addresses

Hi,
I am having problem into getting ipfilter resolve hostnames to
ipv6 addresses.

Contents of ipf6.conf set on machine1(alpha1)

root@alpha1# cat ipf6.conf
#### Based on host name ###########
block in log quick from any to alpha2 port = 22
block in log quick from any to alpha2 port = 21

root@alpha1# ipfstat -6io
empty list for ipfilter(out)
block in log quick from any to b490:8042:8012:a120::/32 port = 22
block in log quick from any to b490:8042:8012:a160::/32 port = 21

In /etc/hosts i have the ipaddress hostname entry. But still it
picks up an arbit ip address. why does this happen and what am i
missing here ?

How does ipfilter resolve the hostnames to ipv6 address ? Does
it look into /etc/hosts ?

Thanks in advance

Cheers
Manik

Its more certainly GNU