On detection, the card first appeared with no MAC address:
Aug 24 23:49:51 p2 /netbsd: [ 1.0084369] Skipping broken PCI header on 0:10:0
Aug 24 23:49:51 p2 syslogd[957]: last message repeated 7 times
Aug 24 23:49:51 p2 /netbsd: [ 1.0084369] rtk0 at pci0 dev 10 function 0: D-Link Systems DFE 530TX+ (rev. 0x10)
Aug 24 23:49:51 p2 /netbsd: [ 1.0084369] Skipping broken PCI header on 0:10:0
Aug 24 23:49:51 p2 /netbsd: [ 1.0084369] rtk0: interrupting at irq 6
Aug 24 23:49:51 p2 /netbsd: [ 1.0084369] Skipping broken PCI header on 0:10:0