From: Roy Marples <roy@marples.name>
Date: Wed, 2 Jul 2014 08:23:28 +0000 (+0000)
Subject: Add a comment to describe why we deny the ability to assign prefixes
X-Git-Tag: v6.4.1~40
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4571e3f87a0f086c621842670a95f5f5078bd22e;p=thirdparty%2Fdhcpcd.git

Add a comment to describe why we deny the ability to assign prefixes
to the requesting interface [ac7063e671].
---

diff --git a/if-options.c b/if-options.c
index a2345c9d..dc39f0a7 100644
--- a/if-options.c
+++ b/if-options.c
@@ -1322,6 +1322,13 @@ parse_option(struct dhcpcd_ctx *ctx, const char *ifname, struct if_options *ifo,
 			np = strchr(p, '/');
 			if (np)
 				*np++ = '\0';
+			/*
+			 * RFC3633 12.1
+			 * the requesting router MUST NOT assign any delegated
+			 * prefixes or subnets from the delegated prefix(es) to
+			 * the link through which it received the DHCP message
+			 * from the delegating router.
+			 */
 			if (strcmp(ifname, p) == 0) {
 				syslog(LOG_ERR,
 				    "%s: cannot assign IA_PD to itself",