"); } int main() { char errbuf[PCAP_ERRBUF_SIZE]; pcap_t *handle; struct bpf_program fp; char filter_exp[] = "tcp and dst port 80"; bpf_u_int32 netmask = 0; // 对于IPv4,通常不需要设置netmask bpf_u_int32 net; // 打开网络设备 handle = pcap_open_live("eth0", BUFSIZ, 1...
known to the program, or if packets are being captured on the Linux "any" pseudo-interface that can capture on more than one network, a value ofPCAP_NETMASK_UNKNOWNcan be supplied; tests for IPv4 broadcast addresses will fail to compile, but all other tests in the filter program will be...
dst net net 匹配范围内包的目的ip地址(一段范围的ip地址),net可以是网络文件中的名称,也可以是一个网ip地址,一个ipv4的ip地址可以是以点分制的数字,如192.168.1.1则对应的网络掩码是255.255.255.255,192.168.1则对应的网络掩码是255.255.255.0,192.168则对应的网络掩码是254.254.0.0,ipv6的ip地址必须是完整的,所...
Pointer(&maskp)), errorBuf, ) { // We can't lookup the network, but that could be because the interface // doesn't have an IPv4. } } var bpf _Ctype_struct_bpf_program cexpr := C.CString(expr) defer C.free(unsafe.Pointer(cexpr)) if -1 == C.pcap_compile(p.cptr, &bpf,...
究其原因，大致有二：一方面，地址资源数量本身非常有限；另一方面，随着互联网技术的普及，更多智能终端...
1619 u_int8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */1649 memset(prefix, 0, sizeof(struct in6_addr)); /* clear the copy buffer */So it looks like "in6_addr" is the variable, and it seems to be talked about in ip6 areas...