ipv6prefix.patch

diff --git src/main/conffile.c src/main/conffile.c
index 13ecf15..98219a5 100644
--- src/main/conffile.c
+++ src/main/conffile.c
@@ -1094,6 +1094,41 @@ int cf_item_parse(CONF_SECTION *cs, char const *name, int type, void *data, char
 		       sizeof(ipaddr.ipaddr.ip6addr));
 		break;
 
+	case PW_TYPE_IPV6PREFIX:
+		if (strchr(value, '/') == 0) {
+			ERROR("%s is not a valid IPv6 prefix", value);
+			return -1;
+		}
+
+		char *endptr;
+		const char *prefixstring = strchr(value, '/') +1;
+		long prefix = strtol(prefixstring,&endptr,10);
+		if (errno == ERANGE
+				|| prefixstring == endptr
+				|| prefixstring + strlen(prefixstring) != endptr) {
+			ERROR("%s is not a valid IPv6 prefix", value);
+			return -1;
+		}
+		char *tmp;
+		tmp = strdup(value);
+		if (ip_hton(strtok(tmp,"/"), AF_INET6, &ipaddr) < 0) {
+			ERROR("%s is not a valid IPv6-Prefix", value);
+			return -1;
+		}
+
+		if (prefix > 128 || prefix < 0) {
+			ERROR("%s has an invalid prefix length", value);
+			return -1;
+		}
+
+		/* TODO: Log shows IP-Address instead of IPv6-Prefix */
+		cf_log_info(cs, "%.*s\t%s = %s IPv6-Prefix [%s]",
+				cs->depth, parse_spaces, name, value,
+				ip_ntoh(&ipaddr, ipbuf, sizeof(ipbuf)));
+		memcpy((char*)data+2, &ipaddr.ipaddr.ip6addr,
+				sizeof(ipaddr.ipaddr.ip6addr));
+		*(uint8_t*)((char*)data+1) = prefix;
+		break;
 	default:
 		/*
 		 *	If we get here, it's a sanity check error.