Red Hat Bugzilla – Bug 108852
ECN precludes connecting to some broadband routers
Last modified: 2007-04-18 12:59:03 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; Galeon) Gecko/20030701 Galeon/1.3.9 Description of problem: I ran into this a few days ago - it's not really a bug in the kernel - more of an interoperability problem, but since it's likely to affect a non-trivial number of users, I figured it was worth reporting. The 2.6 test kernels have TCP ECN enabled - and my dlink wireless router (a DI-713P, to be precise) doesn't respond correctly to TCP SYNs with ECN set - making it impossible to access the web configuration interface from my machine. disabling ecn # sysctl -w net.ipv4.tcp_ecn=0 allows access. Version-Release number of selected component (if applicable): kernel-2.6.0-0.test9.1.67 How reproducible: Always Steps to Reproduce: 1. N/A 2. 3. Additional info:
Check if theres a firmware upgrade that fixes this problem. if not, bug Dlink. It's their problem if they can't cooperate with standardised internet RFCs. I realise this isn't much help to you the end user, but the fact is, d-link sold you a defective product. Luckily you can work around it in the manner you describe above.
I've already done all of the above (checked the latest firmware and bugged dlink) - I filed this in bugzilla more to help others who might run into the same issue and not instinctively turn to ethereal to figure out what's going on.
Same here with a Linksys router.