From 8150c3ec36a3d280725daa656a1ca79b0b035c9d Mon Sep 17 00:00:00 2001 From: "Andrey V. Elsukov" Date: Tue, 16 Dec 2014 14:59:20 +0000 Subject: [PATCH] Add ability to not specify a zone identifier twice, when both source and destination addresses are specified. For example: # ping6 -S fe80::1%ix0 ff02::1 or # ping6 -S fe80::1 fe80::2%ix0 Obtained from: Yandex LLC Sponsored by: Yandex LLC --- sbin/ping6/ping6.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/sbin/ping6/ping6.c b/sbin/ping6/ping6.c index fa314f6cb5c1..d71c021ad458 100644 --- a/sbin/ping6/ping6.c +++ b/sbin/ping6/ping6.c @@ -648,11 +648,20 @@ main(int argc, char *argv[]) err(1, "socket"); /* set the source address if specified. */ - if ((options & F_SRCADDR) && - bind(s, (struct sockaddr *)&src, srclen) != 0) { - err(1, "bind"); + if ((options & F_SRCADDR) != 0) { + /* properly fill sin6_scope_id */ + if (IN6_IS_ADDR_LINKLOCAL(&src.sin6_addr) && ( + IN6_IS_ADDR_LINKLOCAL(&dst.sin6_addr) || + IN6_IS_ADDR_MC_LINKLOCAL(&dst.sin6_addr) || + IN6_IS_ADDR_MC_NODELOCAL(&dst.sin6_addr))) { + if (src.sin6_scope_id == 0) + src.sin6_scope_id = dst.sin6_scope_id; + if (dst.sin6_scope_id == 0) + dst.sin6_scope_id = src.sin6_scope_id; + } + if (bind(s, (struct sockaddr *)&src, srclen) != 0) + err(1, "bind"); } - /* set the gateway (next hop) if specified */ if (gateway) { memset(&hints, 0, sizeof(hints));