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From beab76b5708862f44d9acbe7a92db45e2f99259f Mon Sep 17 00:00:00 2001
From: Nate Karstens <nate.karstens@garmin.com>
Date: Tue, 1 Aug 2017 17:06:01 -0500
Subject: [PATCH 4/8] Indicate loopback interface to mDNS core
Tells the mDNS core if an interface is a loopback interface,
similar to AddInterfaceToList() in the MacOS implementation.
Upstream-Status: Submitted [dts@apple.com]
Signed-off-by: Nate Karstens <nate.karstens@garmin.com>
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
---
mDNSPosix/mDNSPosix.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
Index: mDNSResponder/mDNSPosix/mDNSPosix.c
===================================================================
--- mDNSResponder.orig/mDNSPosix/mDNSPosix.c
+++ mDNSResponder/mDNSPosix/mDNSPosix.c
@@ -1348,7 +1348,7 @@ mDNSlocal void CleanRecentInterfaces(voi
// Creates a PosixNetworkInterface for the interface whose IP address is
// intfAddr and whose name is intfName and registers it with mDNS core.
mDNSlocal int SetupOneInterface(mDNS *const m, struct sockaddr *intfAddr, struct sockaddr *intfMask,
- const mDNSu8 *intfHaddr, mDNSu16 intfHlen, const char *intfName, int intfIndex)
+ const mDNSu8 *intfHaddr, mDNSu16 intfHlen, const char *intfName, int intfIndex, int intfFlags)
{
int err = 0;
PosixNetworkInterface *intf;
@@ -1411,6 +1411,7 @@ mDNSlocal int SetupOneInterface(mDNS *co
intf->coreIntf.Advertise = m->AdvertiseLocalAddresses;
intf->coreIntf.McastTxRx = mDNStrue;
+ intf->coreIntf.Loopback = ((intfFlags & IFF_LOOPBACK) != 0) ? mDNStrue : mDNSfalse;
// Set up the extra fields in PosixNetworkInterface.
assert(intf->intfName != NULL); // intf->intfName already set up above
@@ -1561,7 +1562,7 @@ mDNSlocal int SetupInterfaceList(mDNS *c
}
#endif
if (SetupOneInterface(m, i->ifa_addr, i->ifa_netmask,
- hwaddr, hwaddr_len, i->ifa_name, ifIndex) == 0)
+ hwaddr, hwaddr_len, i->ifa_name, ifIndex, i->ifa_flags) == 0)
{
if (i->ifa_addr->sa_family == AF_INET)
foundav4 = mDNStrue;
@@ -1578,7 +1579,7 @@ mDNSlocal int SetupInterfaceList(mDNS *c
// if ((m->HostInterfaces == NULL) && (firstLoopback != NULL))
if (!foundav4 && firstLoopback)
(void) SetupOneInterface(m, firstLoopback->ifa_addr, firstLoopback->ifa_netmask,
- NULL, 0, firstLoopback->ifa_name, firstLoopbackIndex);
+ NULL, 0, firstLoopback->ifa_name, firstLoopbackIndex, firstLoopback->ifa_flags);
}
// Clean up.
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