X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/f8950c27dbaa98501a64cc3bdb98657c64641c4e..47828bd9813b146e8569355b3083847299dd8729:/server/peer.c?ds=sidebyside

diff --git a/server/peer.c b/server/peer.c
index 34bfb6c4..94629213 100644
--- a/server/peer.c
+++ b/server/peer.c
@@ -791,6 +791,7 @@ void p_init(struct addrinfo *ailist)
 {
   int fd;
   int len = PKBUFSZ;
+  int yes = 1;
   int i;
   struct addrinfo *ai;
   unsigned port, lastport = 0;
@@ -813,6 +814,11 @@ void p_init(struct addrinfo *ailist)
 
     if ((fd = socket(ai->ai_family, SOCK_DGRAM, 0)) < 0)
       die(EXIT_FAILURE, "socket creation failed: %s", strerror(errno));
+    if (i == AFIX_INET6 &&
+	setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes))) {
+      die(EXIT_FAILURE, "failed to set IPv6-only state: %s",
+	  strerror(errno));
+    }
     assert(ai->ai_addrlen <= sizeof(a));
     memcpy(&a, ai->ai_addr, ai->ai_addrlen);
     if ((port = getport(&a)) == 0 && lastport) setport(&a, lastport);