The SysKonnect SK-9E21D (PCI express) is correctly recognized and setup by Yast, but no corresponding network interface appears.

dmesg says the following:

sky2 0000:02:00.0: can't access PCI config space
sky2: probe of 0000:02:00.0 failed with error -22

lspci -vvv output:

02:00.0 Ethernet controller: SysKonnect SK-9E21D 10/100/1000Base-T Adapter, Copper RJ-45 (rev 17)
        Subsystem: SysKonnect SK-9E21D 10/100/1000Base-T Adapter
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin A routed to IRQ 217
        Region 0: Memory at f7000000 (64-bit, non-prefetchable) [size=16K]
        Region 2: I/O ports at 2000 [size=256]
        [virtual] Expansion ROM at 88000000 [disabled] [size=128K]
        Capabilities: [48] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] Vital Product Data
        Capabilities: [5c] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable-
                Address: 0000000000000000  Data: 0000
        Capabilities: [e0] Express Legacy Endpoint IRQ 0
                Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
                Device: Latency L0s unlimited, L1 unlimited
                Device: AtnBtn- AtnInd- PwrInd-
                Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
                Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop-
                Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
                Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s, Port 0
                Link: Latency L0s <256ns, L1 unlimited
                Link: ASPM Disabled RCB 128 bytes CommClk- ExtSynch-
                Link: Speed 2.5Gb/s, Width x1

lspci -vn output:

02:00.0 Class 0200: 1148:9e00 (rev 17)
        Subsystem: 1148:21d0

The system is a Fujitsu Siemens ESPRIMO 5600 (chipset SiS761).

Note that this is on Beta5; I could not yet try Beta6.