Hardware:
C= A500+ 1MB Chip
GVP A500-HD+ 8MB Fast
Kickstart 3.1
Plipbox Deluxe

7.Ram Disk:> version full bsdsocket.library
bsdsocket.library 4.347 (2014-06-24)
Roadshow 1.14
7.Ram Disk:> version full plipbox.device
plipbox.device 0.6 (2009-08-12)
7.Ram Disk:> version full
Kickstart 40.63, Workbench 40.42 (1994-02-18)

7.Ram Disk:> ttcp -s -r
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp
ttcp-r: socket
ttcp-r: accept from 192.168.0.1
ttcp-r: 16777216 bytes in 433.31 real seconds = 37.81 KB/sec +++
ttcp-r: 5779 I/O calls, msec/call = 76.78, calls/sec = 13.34
ttcp-r: 7:13real
7.Ram Disk:> ttcp -s -t 192.168.0.1
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp  -> 192.168.0.1
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 462.85 real seconds = 35.40 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 231.42, calls/sec = 4.42
ttcp-t: 7:42real