anybody seen this? (POST /PAV_REL HTTP/1.0)

while hunting codered, i started seeing quite a few of the following: POST /PAV_REL HTTP/1.0 User-Agent: TSTPAV Connection: Keep-Alive Content-length: 138 Pragma: no-cache Content-type: application/marimba Request-type: update/12 what's being attempted here, and is anybody else seeing it? sometimes it's POST /PAV_REL HTTP/1.1 Host: ... Connection: keep-alive User-Agent: TSTPAV Content-length: 974 Pragma: no-cache Content-type: application/marimba Request-type: update/12 Via: 1.0 proxy-rnb (NetCache NetApp/5.1D3) X-Forwarded-For: ... i'm not currently collecting the content, maybe i should. anybody seen this?