multiple dcc chats lead to multiple windows "dcc chatting" with the same IP

[armao@…]

If I try to initiate multiple (active) dcc chat with different nicknames I usually end up with multiple windows, with all the different nicknames, but actually dcc chatting with the same nickname (same ip is shown below the nickname in fact).
If it helps, I'm trying to instantiate DCC chats with some eggdrop. Passive connection to the eggdrop (/ctcp nickname chat) works perfectly.
I think it may be an issue with the way Colloquy deals with uPNP (I'm using a router with uPNP and I enabled uPNP in Colloquy's settings, ports 1024 to 1124), here's what I see in the Server Status window when I try to initiate the DCC Chats (i changed the nicknames to "aaa", "bbb" for privacy concerns):

CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST ccc DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST ccc DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST bbb DCC CHAT chat 2537830429 1024
CTCP REQUEST ddd DCC CHAT chat 2537830429 1025
CTCP REQUEST ddd DCC CHAT chat 2537830429 1025
CTCP REQUEST ccc DCC CHAT chat 2537830429 1024
CTCP REQUEST ccc DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024
CTCP REQUEST aaa DCC CHAT chat 2537830429 1024

let me know if you need anymore info.

[moebius]

confirmed, it's an issue with uPNP, I just forwarded the same ports (1024-1124) statically on my router (linksys with DD-WRT) and everything works as expected.
uPNP seems to work with other applications like Transmission (bittorrent client), aMule and Skype.