Upgraded Sparc20 IP masq box to 6.0 and now using ipchains. Sun Sparc20 continuously reports that "eth1: receive buffer too small, driver bug" when attempting to push data thru it from the other machines it is masqing for, sometime eth0 too. Ftp uploads, etc seem to cause this. Problem did not exist when machine was running 5.1 and ipfwadm instead of 6.0, the 2.2 kernel, and the new ipchains. I'm assuming this is an ipchains or kernel problem? Can not move files, email, you name it, through this box now. Annoying as all get out. Quad ethernet as well as happy meal nics on Sparc20.
This smells like a kernel problem. Does the problem persist in the latest kernel-2.2.11-4 kernel from Raw Hide?
Tried kernels all the way up to 2.2.10 and then replaced the Sparc 20 with an RH 6 Intel box and three 3com cards. ;) May play with it on the side...