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Add the socket option IPV6_MULTICAST_LOOP to prevent the interface from autoconfiguring using RA messages sent by itself.

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This commit is contained in:
Wei Xing
2023-12-18 02:16:09 +08:00
committed by reubenhwk
parent f2de476455
commit 3c9d4917fe
1 changed files with 7 additions and 0 deletions
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7
socket.c
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@@ -65,6 +65,13 @@ int open_icmpv6_socket(void)
flog(LOG_ERR, "setsockopt(IPV6_MULTICAST_HOPS): %s", strerror(errno));
return -1;
}
err = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (int[]){0}, sizeof(int));
if (err < 0) {
flog(LOG_ERR, "setsockopt(IPV6_MULTICAST_LOOP): %s", strerror(errno));
return -1;
}
#ifdef IPV6_RECVHOPLIMIT
err = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, (int[]){1}, sizeof(int));
if (err < 0) {