do_cmd2
#define do_cmd(a,b,c,d,e,f) do_cmd2((a),(b),(c),(d),(e),NULL,(f))
static int do_cmd2(int, const char *, u_long, void *, size_t, size_t *, int);
if (do_cmd2(sock, bridge, BRDGGIFS, inbuf, nlen, &len, 0) < 0)
if (do_cmd2(sock, bridge, BRDGRTS, inbuf, nlen, &len, 0) < 0)
#define do_cmd(a,b,c,d,e,f) do_cmd2((a),(b),(c),(d),(e),NULL,(f))
static int do_cmd2(int, const char *, u_long, void *, size_t, size_t *, int);