Attachment 628246 Details for Bug 867054 – allow reuse of ipv6 addr

[patch] allow reuse of ipv6 addr

dnsmasq-gc-ip6-reuseaddr-4.patch (text/plain), 1.26 KB, created by Gene Czarcinski on 2012-10-16 16:05:41 UTC

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Creator: Gene Czarcinski

Created: 2012-10-16 16:05:41 UTC

Size: 1.26 KB

patch

obsolete

>diff -urp dnsmasq-2.63.orig-1/src/dhcp6.c dnsmasq-2.63/src/dhcp6.c
>--- dnsmasq-2.63.orig-1/src/dhcp6.c	2012-08-16 09:04:05.000000000 -0400
>+++ dnsmasq-2.63/src/dhcp6.c	2012-10-13 14:42:55.569628608 -0400
>@@ -45,6 +45,25 @@ void dhcp6_init(void)
>       !set_ipv6pktinfo(fd))
>     die (_("cannot create DHCPv6 socket: %s"), NULL, EC_BADNET);
>   
>+  /* When bind-interfaces is set, there might be more than one dnmsasq
>+     instance binding port 547. That's OK if they serve different networks.
>+     Need to set REUSEADDR to make this posible, or REUSEPORT on *BSD. */
>+  if (option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND))
>+    {
>+      int oneopt = 1;
>+      int rc;
>+#ifdef SO_REUSEPORT
>+      rc = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &oneopt, sizeof(oneopt));
>+#else
>+      rc = setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY,  &oneopt, sizeof(oneopt));
>+      if (rc == -1)
>+        die(_("failed to set IPV6_V6_ONLY on DHCPv6 socket: %s"), NULL, EC_BADNET);
>+      rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &oneopt, sizeof(oneopt));
>+#endif
>+      if (rc == -1)
>+	die(_("failed to set SO_REUSE{ADDR|PORT} on DHCPv6 socket: %s"), NULL, EC_BADNET);
>+    }
>+  
>   memset(&saddr, 0, sizeof(saddr));
> #ifdef HAVE_SOCKADDR_SA_LEN
>   saddr.sin6_len = sizeof(struct sockaddr_in6);

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Attachments on bug 867054: 628246 | 628247 | 637482 | 637483 | 640770