Completely missing first parts of request

[bjstrange]

The request I'm sending is valid for our application and the expected response is returned. Tcpdump is attached. The response in this case is a 500 but that doesn't matter as I removed credentials for posting. Everything acts the same with proper credentials. No http header/request info is seen. goreplay seems to see part of the start of the soap envelope and nothing before. Trying to read the tcpdump in goreplay gives the error

stopped reading from pcap_file interface with error EOF

Attached are tcpdump, the xml request, and what goreplay sees when I make the request directly (not from replaying the .pcap file), along with the command line used. Any thoughts?
request.zip