Hi Pat
I have updated my test system with all the sl-testing updates and after rebooting it doesn't recognise the on-board network connection.
Motherboard is Asus M4N68T, but I don't know any details of the network chip.
Rebooting to the old kernel recognises the on-board network connection OK.
dmesg on the old kernel reveals
[ 1.485449] r8169 0000:01:09.0 eth0: RTL8169sb/8110sb at 0xffffc90000c1ac00, a0:f3:c1:10:53:25, XID 10000000 IRQ 19
[ 1.485451] r8169 0000:01:09.0 eth0: jumbo features [frames: 7152 bytes, tx checksumming: ok]
[ 1.539302] forcedeth 0000:00:07.0: ifname eth0, PHY OUI 0x732 @ 1, addr e0:cb:4e:c2:6f:10
Perhaps I need to install a forcedeth driver for the new kernel?