Major Description
MINA build in BlacklistFilter does not support IPV6 address. If MINA itself supports binding to IPV4 and IPV6 why this restriction was kept in BlacklistFilter. I checked the org.apache.mina.filter.firewall.Subnet class in MINA sources and found that it specifically checks for Inet4Address
if (!(subnet instanceof Inet4Address))
{
throw new IllegalArgumentException("Only IPv4 supported");
}