32 lines
1.0 KiB
Diff
32 lines
1.0 KiB
Diff
From bc8f31629d3d6eaaf273781d0b4c83e81bebe0eb Mon Sep 17 00:00:00 2001
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From: Wei Xing <skyxwwalker@gmail.com>
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Date: Mon, 18 Dec 2023 02:16:09 +0800
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Subject: [PATCH] Add the socket option IPV6_MULTICAST_LOOP to prevent the
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interface from autoconfiguring using RA messages sent by itself.
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Reference:https://github.com/radvd-project/radvd/commit/bc8f31629d3d6eaaf273781d0b4c83e81bebe0eb
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Conflict:NA
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---
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socket.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/socket.c b/socket.c
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index 849ed744..547fe939 100644
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--- a/socket.c
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+++ b/socket.c
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@@ -65,6 +65,13 @@ int open_icmpv6_socket(void)
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flog(LOG_ERR, "setsockopt(IPV6_MULTICAST_HOPS): %s", strerror(errno));
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return -1;
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}
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+
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+ err = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (int[]){0}, sizeof(int));
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+ if (err < 0) {
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+ flog(LOG_ERR, "setsockopt(IPV6_MULTICAST_LOOP): %s", strerror(errno));
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+ return -1;
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+ }
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+
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#ifdef IPV6_RECVHOPLIMIT
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err = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, (int[]){1}, sizeof(int));
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if (err < 0) {
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