Under FC4's build of 2.6.13 the broadcom 5752 works well. But when the I use the FC4 build of 2.6.16 it no long works. The hardware is an HP dc7600U, P4 2.8GHz CPU, 512MB memory SATA disk. mii-tool correctly reports the state of the eth0. Removing and inserting the cable is reported as expected. But DHCP or static IP configuration does not work under 2.6.16. In dmesg output on 2.6.16 I see this message: ADDRCONF(NETDEV_UP): eth0: link is not ready I have recompiled the 2.6.13 version of tg3.c for 2.6.16 and that does not fix the problem. Looking at /proc/interrupts I see that a lot of difference between .13 and .16 kernels. Is this related to the problem? Attached are the output of dmesg and /proc/interrupts on 2.6.13 and 2.6.16 kernels as well as lspci output. Barry