Imports github.com/scionproto/scion/go/lib/common github.com/scionproto/scion/go/lib/hpkt github.com/scionproto/scion/go/lib/log github.com/scionproto/scion/go/lib/scmp github.com/scionproto/scion/go/lib/spkt github.com/scionproto/scion/go/tools/scmp/cmn Standard library imports fmt os sync time