ipv6只能向本机发送消息，无法向别的机器发送消息，求助ing
各位，我写了一个利用 ipv6 进行udp通信的小程序，但遇到了一个问题，发往本机的消息可以收到，但发往别的机器的消息接收不到，没能找到原因，望各位高手帮忙瞅一下，我是第一次写网络通信程序：
我的 ipv6 地址（客户端在我机器上，服务端 A 在我机器上）：fe80::2c42:6fb2:a162:85ed%10
另一台机器的 ipv6 地址（服务端 B）：fe80::706d:5cb0:fcac:7141%11
服务端 A 与服务端 B 都是一样的代码，客户端向两个服务端各发一条信息，但只有我电脑上的服务端 A 收到了消息。
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客户端代码:udp_client.cpp
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#include<stdio.h>#include<winsock2.h>#include<ws2tcpip.h>//在编译采用了WINSOCK2.H的应用程序时，需要链接到WS2_32.LIB库 #pragma comment(lib, "WS2_32.LIB") int main(int argc, char* argv[]){ WORD wVersionRequested; WSADATA wsaData; int err; //启动 winsockAPI wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { printf("WSAStartup failed.\n"); system("pause"); return -1; } if (LOBYTE(wsaData.wVersion) != 1|| HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); printf("LOBYTE or HIBYTE failed.\n"); system("pause"); return -2; } //创建套接字 addrinfo hints; addrinfo *otherinfo; addrinfo *meinfo; memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET6; // 使用ipv6协议 hints.ai_socktype = SOCK_DGRAM; hints.ai_protocol = IPPROTO_UDP; hints.ai_flags = AI_NUMERICHOST; // IP用数字表示 getaddrinfo("fe80::706d:5cb0:fcac:7141%11", "2012", &hints, &otherinfo); getaddrinfo("fe80::2c42:6fb2:a162:85ed%10", "2012", &hints, &meinfo); SOCKET s; s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); if(s == INVALID_SOCKET) { WSACleanup(); printf("Create socket failed.\n"); system("pause"); return -3; } //发送消息 char buf[]="Hello, my name is zhcosin."; // 向另一台机器发送 err = sendto(s, buf, strlen(buf), 0, otherinfo->ai_addr, otherinfo->ai_addrlen); if(err == SOCKET_ERROR) { WSACleanup(); printf("Send to other failed.\n"); system("pause"); return -5; } // 向本机发送 err = sendto(s, buf, strlen(buf), 0, meinfo->ai_addr, meinfo->ai_addrlen); if(err == SOCKET_ERROR) { WSACleanup(); printf("Send to me failed.\n"); system("pause"); return -5; } closesocket(s); freeaddrinfo(otherinfo); freeaddrinfo(meinfo); system("pause");}#include<stdio.h>#include<winsock2.h>#include<ws2tcpip.h>//在编译采用了WINSOCK2.H的应用程序时，需要链接到WS2_32.LIB库 #pragma comment(lib, "WS2_32.LIB") int main(int argc, char* argv[]){ WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 1, 1 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { printf("WSAStartup failed.\n"); return -1; } if ( LOBYTE( wsaData.wVersion ) != 1|| HIBYTE( wsaData.wVersion ) != 1 ) { WSACleanup( ); printf("LOBYTE or HIBYTE failed.\n"); return -2; } //创建套接字// addrinfo hints; addrinfo *res; memset(&hints, 0, sizeof(hints)); hints.ai_flags= AI_PASSIVE; hints.ai_family=AF_INET6; hints.ai_socktype=SOCK_DGRAM; hints.ai_protocol=IPPROTO_UDP; getaddrinfo("::0", "2012", &hints, &res); SOCKET s; s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if(s == INVALID_SOCKET) { WSACleanup(); printf("Create socket failed.\n"); return -3; } //绑定套接字// err = bind(s, res->ai_addr, res->ai_addrlen); if(err == SOCKET_ERROR) { WSACleanup(); printf("Bind socket failed.\n"); return -4; } char buf[1024]; memset(buf, 0, 1024); int len; sockaddr_in6 sin; len = sizeof(sin); err = recvfrom(s, buf, 1024, 0, (struct sockaddr*)&sin, &len); if(err == SOCKET_ERROR) { closesocket(s); WSACleanup(); printf("Receive failed.\n"); return -5; } char ipbuf[INET6_ADDRSTRLEN]; inet_ntop(AF_INET6, &sin.sin6_addr, ipbuf, INET6_ADDRSTRLEN); printf("We successfully received %d bytes from address %s:%d.\nmessage:%s\n", err, ipbuf, ntohs(sin.sin6_port), buf); freeaddrinfo(res); closesocket(s); system("pause"); }