Edonkey LowID Problem with Iptables

jackey

我的iptables如下,
# Generated by iptables-save v1.2.6a on Tue Oct 29 22:28:14 2002
*mangle
REROUTING ACCEPT [0]
:INPUT ACCEPT [0]
:FORWARD ACCEPT [0]
:OUTPUT ACCEPT [0]
OSTROUTING ACCEPT [0]
COMMIT
# Completed on Tue Oct 29 22:28:14 2002
# Generated by iptables-save v1.2.6a on Tue Oct 29 22:28:14 2002
*nat
REROUTING ACCEPT [0]
OSTROUTING ACCEPT [0]
:OUTPUT ACCEPT [0]
[212] -A POSTROUTING -o ppp0 -j MASQUERADE
COMMIT
# Completed on Tue Oct 29 22:28:14 2002
# Generated by iptables-save v1.2.6a on Tue Oct 29 22:28:14 2002
*filter
:INPUT ACCEPT [0]
:FORWARD ACCEPT [0]
:OUTPUT ACCEPT [0]
COMMIT
# Completed on Tue Oct 29 22:28:14 2002

用http://www.thedonkeynetwork.com/connection_test测试结果有时正确而有时如下:
connection was accepted on ip 156.34.90.86
sent hello but the answer doesn't seem to come from an edonkey client !??

这个导致我经常被服务器给踢出来,说我是LOWID
有人知道怎么办吗?