Macros starting with `r' in net

• R_Malloc net/radix.h:110
• ROTATE_BUFFERS net/bpf.c:376
• ROUNDUP net/if.c:138
• RTFREE net/route.h:203
• RTHASHMOD net/route.h:215
• rt_key net/route.h:90
• rt_mask net/route.h:91
• RTTTOPRHZ net/route.h:75