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Use SO_BINDTODEVICE if we're using old multicast API (i.e., struct ip_mreq

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and not ip_mreqn). This should get multicasts on unnumbered PtP links work.
This commit is contained in:
Martin Mares 1999-04-14 11:21:02 +00:00
parent 9da4d14340
commit 36154beb70
1 changed files with 10 additions and 0 deletions
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10
sysdep/unix/io.c
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@ -413,6 +413,16 @@ sk_open(sock *s)
ASSERT(s->iface);
mreq.imr_ifindex = s->iface->index;
set_inaddr(&mreq.imr_address, s->iface->ip);
#ifdef SO_BINDTODEVICE
{
struct ifreq ifr;
strcpy(ifr.ifr_name, s->iface->name);
if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0)
ERR("SO_BINDTODEVICE");
}
#else
#error Multicasts not supported on PtP devices /* FIXME: Solve it somehow? */
#endif
#else
struct in_addr mreq;
struct ip_mreq mreq_add;