4 - check negative caching
5 - check handling of network errors
6 - try to avoid libresolv.a
7 - replace "Unknown device" with "Device"
9 Capabilities with partial decoding:
10 - PCIe 2nd set of control/status registers (have spec)
11 - HyperTransport caps (have spec)
13 Capabilities with no decoding:
16 - CompactPCI central resource control
19 - SATA HBA (have spec)
20 - Advanced features (have spec)
21 - Advanced Error Reporting (ext'd)
22 - Virtual Channel (ext'd)
23 - Power Budgeting (ext'd)
24 - Root Complex * (ext'd)
25 - Multi-Function Virtual Channel (ext'd)
26 - Root Bridge Control Block (ext'd)
27 - Access Controls (ext'd)