Macros starting with `r' in net

• R_Malloc net/radix.h:127
• ROTATE_BUFFERS net/bpf.c:402
• ROUNDUP net/if.c:132
• RTFREE net/route.h:228
• rt_key net/route.h:91
• rt_mask net/route.h:92
• RTTTOPRHZ net/route.h:76