I can confirm that bug: with a Sunfire X4140, bridge-utils installed (I have a KVM installation) on Debian 7.1 I get a reboot (with the “Hypertransport sync flood error” in the sebsequent BIOS log) when the system is configuring the network. The proposed workaround (“pre-up /sbin/ifconfig eth0 up”) seems to work. Thanks, Daniele |