Nic transfers out but can't receive packets. Need (IRQ?) help.

Question

The other day, I was having trouble with an Intel board with an on board Realtek nic. (see http://forum.java.sun.com/thread.jspa?threadID=5282653&tstart=0)
I'm having a similar problem now with a Gigabyte 8i865GME-775 with an Intel 8550 onboard nic.
The interface is plumbed, up, running and properly configured as iprb0 once I added the appropriate line in /etc/driver_aliases which was irpd "pci8086,1051"
I did some snooping around in logs and I noticed that packets are going out but there are no packets coming in according to kstat iprd.
I tried apci_user_options = 0x2 as well as 0x4, 0x8 and 0. Didn't seem to make a difference. Is there something else besides just rebooting to do? I also tried the two set pcplusmp:apic_forceload = -1 and set pcplusmp:apic_use_apci = 0 separately without any luck.
I administer the machines I use to test and develop on so my administrative talents are obviously lacking and I'm in need of help with this.
There seems to be a shared resource conflict indicated by this line in dmesg
pcplusmp: [ID 637496 kern.info] pcplusmp: pci8086,1051 (iprb) instance 0 vector 0x14 ioapic0x2 intin 0x14 is bound to cpu 1     
The first time I saw it I was pretty sure it was cpu0 with the same vector.
According to the POST messages, the IRQ assigned to the nic card is 10, which doesn't seem to conflict with any of the other pci devices listed at that time. Is there a way to resolve this conflict from within Solaris? Or at least a way to view the currently assigned IRQ addresses? What's the relationship between vectors and irq's?
I'm going to disable some of the devices that are not needed to see if that helps. But I didn't find any way to change the irq of the nic or the cpu in this Award Bios.
There are a lot of great cutting edge features in Solaris 10, but these types of problems seem to have been plaguing people since at least 2003 from what I've seen. The last time I even worried about IRQ's, Intell processors came in two flavors SX and DX, and 9600bps was really fast. This seems to be a problem with the way Solaris 10's PnP code and not with the drivers.
Is there anything else that can be done to get this resolved?

Answer 1

Had to post this first thing in the morning because I'm all confused.
First, mother board is actually GA-8i865GME-775-RH. The onboard nic is EP82562G chip (10/100Mbit) which I believe is also referenced as just 82562G by Intel.
From prtpicl for the device I get:
pci1458,e000 (obp-device, 70000001c4)
:DeviceID     0x0
:UnitAddress     1
:device_id     0x1051
:vendor-id     0x8086
:revision-id     0x2
:class-code     0x2000
:unit-address     8
:subsystem-id     0xe000
:subsystem-vendor-id     0x1458
:min-grant     0x8
:max-latency     0x38
:interrupts     0x1
:devsel-speed     0x1
:fast-back-to-back
:power-consumption     01 00 00 00 01 00 00 00
:model     Ethernet controller
:compatible     (70000001cfTBL)
| pci8086,1051.1458.e000.2 |
| pci8086,1051.1458.e000 |
| pci1458,e000 |
| pci8086,1051.2 |
| pci8086,1051 |
| pciclass,020000 |
| pciclass,0200 |
:reg
From http://www.pcidatabase.com/ I found,
8086 is Intel
1051 is PRO/100 VE Network Connection
/boot/solaris/devicedb/master lists iprb when I grep for "PRO/100 VE". iprb plumbed but isn't working. From here http://blogs.sun.com/coolzephyr/date/200704 it's listed as ife
On another Sun Blog and a couple other sites I saw the pci1458,e000 part refered to Syskonnect and the skge driver. On other's that id series was also linked to nge, rtls, rge and gani. So I'm not even sure if I'm using the correct driver. Intel no longer seems to have Solaris drivers for the Pro/100 VE chips, the link to Syskonnect is old and broken and I'm not sure what their actual product is.
In /etc/driver_aliases and /boot/solaris/devicedb/master for pci8086,1005
But if that's the case, why wasn't it detected during the installation?
I tried loading the nge, rtls, rge and even e1000g drivers just in case. devfsadm failed to attach them.
I went back to iprb. Made sure /etc/driver_aliases and /boot/solaris/devicedb/master reflected the correct pci8086,1051 location.
iprb0 gets plumbed but "no MII link detected" still shows up on boot.
I'm at a complete loss.