1From 0fcc0f210f3a9310a1963de640b384ce866410fd Mon Sep 17 00:00:00 2001
2From: Nate Karstens <nate.karstens@garmin.com>
3Date: Wed, 9 Aug 2017 09:16:58 -0500
4Subject: [PATCH 08/11] Mark deleted interfaces as being changed
5
6Netlink notification handling ignores messages for deleted links,
7RTM_DELLINK. It does handle RTM_GETLINK. According to libnl docu-
8mentation (http://www.infradead.org/~tgr/libnl/doc/route.html)
9RTM_DELLINK can be sent by the kernel, but RTM_GETLINK cannot.
10There was likely a mixup in the original implementation, so this
11change replaces handling for RTM_GETLINK with RTM_DELLINK.
12
13Testing and Verification Instructions:
14  1. Use ip-link to add and remove a VLAN interface and verify
15     that mDNSResponder handles the deleted link.
16
17Upstream-Status: Submitted [dts@apple.com]
18
19Signed-off-by: Nate Karstens <nate.karstens@garmin.com>
20---
21 mDNSPosix/mDNSPosix.c | 2 +-
22 1 file changed, 1 insertion(+), 1 deletion(-)
23
24diff --git a/mDNSPosix/mDNSPosix.c b/mDNSPosix/mDNSPosix.c
25index 798ab10..a8a57df 100644
26--- a/mDNSPosix/mDNSPosix.c
27+++ b/mDNSPosix/mDNSPosix.c
28@@ -1163,7 +1163,7 @@ mDNSlocal void          ProcessRoutingNotification(int sd, GenLinkedList *change
29 #endif
30
31         // Process the NetLink message
32-        if (pNLMsg->nlmsg_type == RTM_GETLINK || pNLMsg->nlmsg_type == RTM_NEWLINK)
33+        if (pNLMsg->nlmsg_type == RTM_DELLINK || pNLMsg->nlmsg_type == RTM_NEWLINK)
34             AddInterfaceIndexToList(changedInterfaces, ((struct ifinfomsg*) NLMSG_DATA(pNLMsg))->ifi_index);
35         else if (pNLMsg->nlmsg_type == RTM_DELADDR || pNLMsg->nlmsg_type == RTM_NEWADDR)
36             AddInterfaceIndexToList(changedInterfaces, ((struct ifaddrmsg*) NLMSG_DATA(pNLMsg))->ifa_index);
37--
382.17.1
39
40