git: 16587f60a698 - main - udp: fix local blackholing

The branch main has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=16587f60a69820f1a319644da4ec1a40efbcbdf0

commit 16587f60a69820f1a319644da4ec1a40efbcbdf0
Author:     Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2025-06-13 20:57:16 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2025-06-13 20:59:50 +0000

    udp: fix local blackholing
    
    The sysctl-variable net.inet.udp.blackhole_local should affect
    UDP packets from an IPv6 address of the local host, not of a host on
    the local area network.
    Thanks to cc@ for pointing me to the issue.
    
    Reviewed by:            cc
    MFC after:              1 week
    Sponsored by:           Netflix, Inc.
    Differential Revision:  https://reviews.freebsd.org/D50829
---
 sys/netinet6/udp6_usrreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/netinet6/udp6_usrreq.c b/sys/netinet6/udp6_usrreq.c
index c8f91fff2b76..304effa26e01 100644
--- a/sys/netinet6/udp6_usrreq.c
+++ b/sys/netinet6/udp6_usrreq.c
@@ -517,7 +517,7 @@ skip_checksum:
 			goto badunlocked;
 		}
 		if (V_udp_blackhole && (V_udp_blackhole_local ||
-		    !in6_localaddr(&ip6->ip6_src)))
+		    !in6_localip(&ip6->ip6_src)))
 			goto badunlocked;
 		icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
 		*mp = NULL;