NAT-PMP Broadcast Address?
NAT-PMP Broadcast Address?
- Subject: NAT-PMP Broadcast Address?
- From: email@hidden
- Date: Mon, 10 Sep 2007 11:56:44 -0600
Hi, I am trying to make NAT-PMP in c++ (I'm not using mdnsresponder):
http://files.dns-sd.org/draft-cheshire-nat-pmp.txt
It's a nice simple protocol, so I have it all working if I send the
udp packets to 192.168.0.1, which is the address of the airport.
However, I have tried these broadcast addresses and it absolutely
will not respond to the discovery packet:
224.0.0.1
224.0.0.2
224.0.0.251
239.255.255.250
I am just wondering if I am missing something, like maybe I have to
send a special discovery packet to get the address of the router, and
then pass that to NAT-PMP so it can query the router address
directly. Or, do I look in the system somewhere for the router
address as seen in system prefs?
I have been using:
sudo tcpdump -i en1 udp
On the console to check for responses, but I'm not seeing anything,
If someone has a NAT-PMP app, they could just send me a packet trace
and I could go from there. Google hasn't been much help.
Thanx for any help you can provide,
--Zack
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