Another possible issue is a switch from single interrupt to multiple msi
(and bugs in that area). If you check your -8 and -9 dmesg you should see
details printed about interrupts routed to the bge interfaces (not sure
if you need to boot -v for that nowadays).
There is no any difference except 8.1 find pic msi1 but 9.0 find pic msix1 here:
[ 1.033124] allocated pic msix1 type edge pin 0 level 6 to cpu0 slot 17 idt entry 99
all other information is letter for letter. In a case of missing something
I've placed all output here: http://kab00m.ru/temp/almaz.tgz