capture filter "vlan and stp" showing nothing

edit

update:

1. vlan part of the filter works ... I sniffed without tags and capture of stp still doesn't work
2. stp packets I'm seeing are pvst stuff, display filter recognizes them
3. the BPF code lets me know that the capture filter doesn't recognize this form of stp:

(000) ldh [12]

(001) jgt #0x5dc jt 5 jf 2 (checks that the packets are 1500 bytes or less)

(002) ldb [14]

(003) jeq #0x42 jt 4 jf 5 (spanning tree SAP)

(004) ret #262144

(005) ret #0

but the packets for RPVST have SNAP PID of 0x010B

I'm guessing, but is there a way to capture filter based on the SNAP PID?

Apparently the display filtering system knows how to do it, but the capture filtering doesn't.