From: Roy Marples <roy@marples.name>
Date: Sun, 26 Jul 2015 14:35:27 +0000 (+0000)
Subject: Ignore interface address changes we made on Linux.
X-Git-Tag: v6.9.2~24
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cd6bfb832b886db0c5415d345a61eab64bc4aa3;p=thirdparty%2Fdhcpcd.git

Ignore interface address changes we made on Linux.
Fixes [0f72e262e9].
---

diff --git a/if-linux.c b/if-linux.c
index 89b70999..8b08822a 100644
--- a/if-linux.c
+++ b/if-linux.c
@@ -595,6 +595,14 @@ link_addr(struct dhcpcd_ctx *ctx, struct interface *ifp, struct nlmsghdr *nlm)
 		errno = EBADMSG;
 		return -1;
 	}
+
+	/* Ignore messages generated by us.
+	 * For some reason we get messages generated by us
+	 * with a very large value in nlmsg_pid that seems to be
+	 * sequentially changing. Is there a better test for this? */
+	if (nlm->nlmsg_pid > get_max_pid_t())
+		return 1;
+
 	ifa = NLMSG_DATA(nlm);
 	if ((ifp = if_findindex(ctx->ifaces, ifa->ifa_index)) == NULL) {
 		/* We don't know about the interface the address is for