(usagi-users 02736) multicast to ff05::/16

[Takashi Hibi <hibi665@xxxxxxx>]

Hi all,

I have a simple question.

Is it possible to send multicast packet to ff05::/16 network?
The following is a simple test code.
If ff05::x (x=1,2,..) is specified as argv[1], sendto() fails.
The error message is "Cannot assign requested address".
But it works on FreeBSD and Windows.
What is wrong?

Regards,
Takashi Hibi

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

int main(int argc, char *argv[])
{
        addrinfo hint;
        addrinfo *AI;
        int s;
        int ret;
        char buf[64];

        memset(&hint, 0, sizeof(hint));
        hint.ai_family = AF_INET6;
        hint.ai_socktype = SOCK_DGRAM;
        ret = getaddrinfo(argv[1], argv[2], &hint, &AI);
        if (ret < 0) {
                printf("%s\n", gai_strerror(ret));
                return -1;
        }

        s = socket(AF_INET6, SOCK_DGRAM, 0);
        ret = sendto(s, buf, sizeof(buf), 0, (sockaddr *)paddr, sizeof(*paddr));
        if (ret < 0) {
                perror("sendto");
        }

        freeaddrinfo(AI);

        return 0;
}
~