linux- socket编程-直接获取网卡-packet- sokcket

static struct sock_filter isisfilter[] = {
   
/* NB: we're in SOCK_DGRAM, so src/dst mac + length are stripped off!
 * (OTOH it's a bit more lower-layer agnostic and might work over GRE?) */
/*	{ 0x28, 0, 0, 0x0000000c - 14 }, */
/*	{ 0x25, 5, 0, 0x000005dc }, */
	{
    0x28, 0, 0, 0x000
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