From Bugzilla Helper: User-Agent: Mozilla/5.0 Galeon/1.2.0 (X11; Linux i686; U;) Gecko/20020408 Description of problem: I have been happily running red hat 7.3 with kernels 2.4.18-3, later moving to 2.4.18-4. When I switched to 2.4.18-5 and rebooted, my network failed. All attempts to contact other systems would be unable to resolve host names (when I used a host name), or would give "network unreachable" (if I gave an IP address). Rebooting and choosing 2.4.18-4 under Grub made things work again. I tried twice to make sure it wasn't a transient problem, both times 2.4.18-5 failed and 2.4.18-4 worked. "dmesg" showed no network startup problems, "ifconfig" reported exactly the same configuration for each kernel. Version-Release number of selected component (if applicable): 2.4.18-5 How reproducible: Always Steps to Reproduce: 1.Choose kernel 2.4.18-5 under grub. 2.Ping a hostname or an IP address of any machine. Actual Results: ping cannot resolve host IP address; if given the IP address, ping says says "network unreachable" Expected Results: ping reports response time. Additional info: /proc/pci reports that this is my network card: Bus 0, device 12, function 0: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 16). IRQ 11. Master Capable. Latency=32. Min Gnt=32.Max Lat=64. I/O at 0xe800 [0xe8ff]. Non-prefetchable 32 bit memory at 0xe8002000 [0xe80020ff]. Also, note that I'm calling this severity "high". It does not crash, but wihtout network connectivity this system is pretty much useless (no email, no web browser, etc.), so crashing would be no worse!!! If you think it should be normal severity, that's fine go ahead and drop it down.
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