环回中的嗅探会捕获外部流量吗?

我有一个游戏服务器在某个端口上运行。 我学会了在环回上嗅数据包。因此，如果我从同一台计算机连接到它，则会捕获数据包。

但是有人可以从其他计算机连接，并且数据包不会被嗅探。

来自某台计算机的数据包必须通过我的一个接口。那么我是否应该也嗅探该接口，以便从我的计算机和其他计算机获取数据包？

这是我的程序

#define IP_HL(ip)               (((ip)->ip_vhl) & 0x0f)
#define IP_V(ip)                (((ip)->ip_vhl) >> 4)
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <stdio.h>
#include <pcap.h>
#include <WS2tcpip.h>
#pragma comment(lib, "Ws2_32.lib")
void
got_packet(u_char* args, const struct pcap_pkthdr* header, const u_char* packet)
{
for (int i = 0; i < (*header).len; i++)
{
printf("%d ", (unsigned char)packet[i]);
}
printf("n");
return;
}
int main(int argc, char* argv[])
{
char* dev, errbuf[PCAP_ERRBUF_SIZE];
pcap_if_t* interfaces, * temp;
pcap_if_t* loopback = NULL;
int i= pcap_findalldevs(&interfaces,errbuf);
if (i == -1) {
fprintf(stderr, "Couldn't find default device: %sn", errbuf);
return(2);
}
for (temp = interfaces; temp; temp = temp->next)
{
printf("%d ", temp->flags);
printf("Name: %s with ", temp->name);
printf(" %s n", temp->description);
if (temp->flags % 2 == 1)
{
printf("Loopback device foundn");
loopback = temp;
}
}
if (loopback == NULL)
{
printf("No loopback device found.n Install npcap from nmap.org/npcap / ");
return 0;
}
struct bpf_program fp;      /* The compiled filter expression */
pcap_t* handle;
char filter_exp[] = "port 8192";    /* The filter expression */
bpf_u_int32 net = NULL;     /* The IP of our sniffing device */
struct pcap_pkthdr header;  /* The header that pcap gives us */
const u_char* packet;       /* The actual packet */
handle = pcap_open_live(loopback->name, BUFSIZ, 1, 5000, errbuf);

if (handle == NULL) {
fprintf(stderr, "Couldn't open device %s: %sn", loopback->name, errbuf);
return(2);
}
if (pcap_compile(handle, &fp, filter_exp, 0, net) == -1) {
fprintf(stderr, "Couldn't parse filter %s: %sn", filter_exp, pcap_geterr(handle));
return(2);
}
if (pcap_setfilter(handle, &fp) == -1) {
fprintf(stderr, "Couldn't install filter %s: %sn", filter_exp, pcap_geterr(handle));
return(2);
}
pcap_loop(handle, -1, got_packet, NULL);
pcap_close(handle);
return(0);
}