Rusty, I have two identical machines and the problem exists on both. The machines have Megaplex II quad Pentium III Xeon PCI ISA system boards. I have 550 Pentium III Xeon, 100/512 processors. I am running test11 which I downloaded a few days ago. I have installed no patches. My iptables is 1.1.2. I compiled two version of the kernel, one is single processor and one is SMP. I can successfully run iptables on the single processor kernel and I can also get it to work with two processors using the SMP kernel. With 4 processors the system boots fine, but when I try to run iptables with 4 processors the system freezes solid. It does not write anything to the system log. We currently have iptables working on a single processor machine in our network. It typically tracks an average of 13000 connections with peaks reaching 21000 connections. It works flawlessly. We want to upgrade from 10/100 interfaces to GigE. We hoped to use the 4 processor machines to do this. I am attaching my kernel config file. If you have any ideas how to get all four processors working please let me know. Thanks Roger Rusty Russell wrote: > In message <3A27D4D6.4DA47346@lanl.gov> you write: > > > > I have 2.4.0 test 10 and test 11 installed on a multiprocessor (Intel) > > machine. I have tried both test versions of the kernel. I configured > > the kernel for single > > and multi processor. When I boot single processor, iptables will run > > fine. When I boot the machine with the multiprocessor kernel and run > > iptables, the kernel dumps several pages of hex and the final two lines > > of output are: > > > > Killing interrupt handler > > scheduling in interrupt > > My development box (running test10pre5) is SMP, and it works fine. I > haven't updated to the latest kernel version because I like my > filesystems in one piece, and the netfilter code hasn't changed. > > What is your kernel configuration, and iptables version? Have you > patched the kernel? > > Thanks for the report, > Rusty. > -- > Hacking time.