Description of problem: Windows Mobile based cell phones use an Ethernet-like protocol, RNDIS, over USB for synchronization and Internet sharing. They also use USB for charging the cell phone. When plugged in, they will answer DHCP on the 169.254/16 network (despite this being nonsense) and give a default route, even though that may not actually lead anywhere. Unfortunately, NetworkManager will always switch to this bogus "Ethernet". Selecting a wireless network will cause it to switch over to it, and then immediately switch back. The routing table ends up looking something like: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 169.254.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0 172.27.2.0 0.0.0.0 255.255.254.0 U 0 0 0 wlan0 0.0.0.0 169.254.2.1 0.0.0.0 UG 0 0 0 eth1 There needs to be an (easy) way to disable this network, at least for the purpose of being the default gateway. One presumably doesn't want it to be automatically disabled, in case this is used for using the cell phone as an Internet-sharing device for 3G or EDGE. Version-Release number of selected component (if applicable): NetworkManager-0.7.0-0.9.4.svn3675.fc9.x86_64 How reproducible: Every time Steps to Reproduce: 1. While on a wireless network, plug in a Windows Mobile 6 smartphone. 2. Check the resulting routing table. 3. Try to re-enable the wireless network. Actual results: Expected results: Additional info:
I've seen this. It is a pretty braindead behavior on behalf of the mobile device, but I suppose we need to make a workaround for it.
Created attachment 328435 [details] patch to fix ifcfg-rh nm-system-settings plugin which was incorrectly applying the IPADDR as the value of GATEWAY I just tried this with a WM6.1-based phone, and I don't get a gateway from the RNDIS device. Do you still see this problem? I'm using NetworkManager-0.7.0-1.git20090102.fc10 plus a patch (attached) and this is what I see with nm-tool: - Device: eth2 ---------------------------------------------------------------- Type: Wired Driver: rndis_host State: connected Default: no HW Address: 80:00:60:0F:E8:00 Capabilities: Supported: yes Carrier Detect: yes Wired Settings IPv4 Settings: Address: 169.254.2.2 Prefix: 24 (255.255.255.0) Gateway: 0.0.0.0 Now, I just fixed a bug that duplicates a connection's IP Address as its gateway if there isn't a gateway, so perhaps that is what you were hitting. See if the attached patch fixes the issue for you.
First, i don't know much. But on multiple occasions, the newsgroup knowledge of /sbin/route makes us forget about the much more powerful /sbin/ip command, otherwise known as policy routing. Wouldn't it be better to use Policy Routing for this to enable multiple default gateways based on priority - this bogus gateway would have the least priority / used last. Most people will not have routed or some form of dynamic routing bgp turned on. PolicyRouting.org has a free online book.
This bug has been triaged. -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers
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