in asterisk 1.8 fail2ban stop working

Hello
Just found out that fail2ban stop to work after upgrade to the asterisk 1.8. The reason is changes in the asterisk log file:

version 1.6
failed for '121.130.12.2' - No matching peer found

version 1.8
failed for '121.130.12.2:49503' - No matching peer found

fail2ban log:
fail2ban.filter : WARNING Unable to find a corresponding IP address for 121.130.12.2:49503

Fix:
/etc/fail2ban/filter.d/asterisk.conf

change '' to ':.*'

....
NOTICE.* .*: Registration from '.*' failed for ':.*' - No matching peer found
NOTICE.* .*: Registration from '.*' failed for ':.*' - Username/auth name mismatch
NOTICE.* .*: Registration from '.*' failed for ':.*' - Device does not match ACL
....