Hi, I've posted this once before for kernels 2.4.5 and 2.4.6pre5. I upgraded to 2.4.6 in the meantime, but the kernel still panics with the same calling stack. If there is any information missing please let me know. I'll be glad to test any patches. Regards, Matthias -- Hi, I've been repeatedly experiencing the same kernel panic. It happens on a computer that acts as an isdn internet gateway for my home network. Two other computers, that have the same kernel and NICs but don't do ip-forwarding have not crashed so far. * NIC: 3com 3c905B-TX (PCI) * ISDN: Teles 16.3 (ISA) The calling stack always looked pretty much the same (see Attachment). The panic occurs, when multiple internet connections are in use. Regards, Matthias PS: Please put into CC, as I am not subscribed to the list. I've skimmed over the last two weeks of the archive, but did not find anything that looked similar to me.