[dhcp] improve range6.patch

[Jiří Popelka]

commit 077cc7630bd975a15f249a79caa02d0a508e59fd
Author: Jiri Popelka <jpopelka at redhat.com>
Date:   Tue Sep 17 14:24:09 2013 +0200

    improve range6.patch

 dhcp-4.2.5-range6.patch |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/dhcp-4.2.5-range6.patch b/dhcp-4.2.5-range6.patch
index 754d899..a4f409f 100644
--- a/dhcp-4.2.5-range6.patch
+++ b/dhcp-4.2.5-range6.patch
@@ -11,8 +11,8 @@ index 12ab0e6..4454be9 100644
 +	char lowbuf [INET6_ADDRSTRLEN], netbuf [INET6_ADDRSTRLEN];
 +
 +	if (!addr_eq(subnet->net, subnet_number(*addr, subnet->netmask))) {
-+		strcpy(lowbuf, piaddr(*addr));
-+		strcpy(netbuf, piaddr(subnet->net));
++		strncpy(lowbuf, piaddr(*addr), INET6_ADDRSTRLEN);
++		strncpy(netbuf, piaddr(subnet->net), INET6_ADDRSTRLEN);
 +		log_fatal("bad range6, address %s not in subnet6 %s/%d",
 +			lowbuf, netbuf, subnet->prefix_len);
 +	}