diff options
| -rw-r--r-- | networking/ping.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/networking/ping.c b/networking/ping.c index c4a498cd8..6945abb4a 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -530,8 +530,12 @@ static void ping4(len_and_sockaddr *lsa) pingsock = create_icmp_socket(); pingaddr.sin = lsa->sin; - if (source_lsa) - xbind(pingsock, &lsa->sa, lsa->len); + if (source_lsa) { + if (setsockopt(pingsock, IPPROTO_IP, IP_MULTICAST_IF, + &source_lsa->sa, source_lsa->len)) + bb_error_msg_and_die("can't set multicast source interface"); + xbind(pingsock, &source_lsa->sa, source_lsa->len); + } /* enable broadcast pings */ setsockopt_broadcast(pingsock); @@ -578,7 +582,7 @@ static void ping6(len_and_sockaddr *lsa) pingaddr.sin6 = lsa->sin6; /* untested whether "-I addr" really works for IPv6: */ if (source_lsa) - xbind(pingsock, &lsa->sa, lsa->len); + xbind(pingsock, &source_lsa->sa, source_lsa->len); #ifdef ICMP6_FILTER { @@ -659,7 +663,7 @@ static void ping(len_and_sockaddr *lsa) printf("PING %s (%s)", hostname, dotted); if (source_lsa) { printf(" from %s", - xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len)); + xmalloc_sockaddr2dotted_noport(&source_lsa->sa, source_lsa->len)); } printf(": %d data bytes\n", datalen); @@ -691,7 +695,6 @@ int ping_main(int argc, char **argv) if_index = if_nametoindex(opt_I); if (!if_index) { /* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */ - /* (ping doesn't support source IPv6 addresses yet anyway) */ source_lsa = xdotted2sockaddr(opt_I, 0); } } |