From 36154beb705cdaf03f9ee050798d9e653ded6ca5 Mon Sep 17 00:00:00 2001 From: Martin Mares Date: Wed, 14 Apr 1999 11:21:02 +0000 Subject: Use SO_BINDTODEVICE if we're using old multicast API (i.e., struct ip_mreq and not ip_mreqn). This should get multicasts on unnumbered PtP links work. --- sysdep/unix/io.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'sysdep/unix/io.c') diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c index d98972c7..02de2fa7 100644 --- a/sysdep/unix/io.c +++ b/sysdep/unix/io.c @@ -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; -- cgit v1.2.3