golang-github-cockroachdb-cmux-dev 0.0~git20170110.0.30d10be-1 (ppc64el binary) in ubuntu cosmic

 The cmux library is a generic Go library to multiplex connections
 based on their payload. Using cmux you can serve gRPC, SSH, HTTPS,
 HTTP, Go RPC and pretty much any other payload on the same TCP
 listener. Lookahead is used to match and hand off connections
 to the appropriate server implementation.
 .
 This package is a fork of github.com/soheily/cmux.