Re: [nox-dev] Adding DNS functionality to nox

2011-08-25 Thread Murphy McCauley
What is generating these ICMP messages? You should be able to stop them by dropping the packets you're intercepting. It strikes me as totally possible that they are causing the problem. Also, I might try testing using nslookup or dig instead of ping. -- Murphy On Aug 25, 2011, at 9:55 AM, ib

Re: [nox-dev] Adding DNS functionality to nox

2011-08-25 Thread ibrahim mun
Hi Christian, Wireshark shows standard dns replays, and that's why ping works sometimes. The only irregularity I see are icmp "port unreachable" packets, generated because nothing is listening on 10.0.0.2:53. but I think it's not the problem! Thanks for you help. Ibrahim From: chest...@dca.fee.

Re: [nox-dev] Adding DNS functionality to nox

2011-08-25 Thread ibrahim mun
Hi again, One last question in this thread :) , about weird dns functionality: In mininet I have a single switch (s1), 4 hosts (h2,h3,h4,h5) (10.0.0.2 -> 10.0.0.5) resolve.conf points to 10.0.0.2 as dns server, but actually nox catchs dns requests matching with dst port 53, builds the respons

Re: [nox-dev] FW: Checksum calculation bug?

2011-08-25 Thread ibrahim mun
Hi Murphy, That's true, converting to string solves the problem. However, I think it would be better to modify checksum() to test the type of passed data. Also, a "build packet" example would be great for the next nox update :-) Thanks, Ibrahim Subject: Re: [nox-dev] FW: Checksum calculation