diff --git a/dnsmasq-2.77rc3-fix-dhcp.patch b/dnsmasq-2.77rc3-fix-dhcp.patch
new file mode 100644
index 0000000..23f5265
--- /dev/null
+++ b/dnsmasq-2.77rc3-fix-dhcp.patch
@@ -0,0 +1,25 @@
+From 7ab78b937fc1b98a1e47a63b2cc1f8451cd7c5fa Mon Sep 17 00:00:00 2001
+From: Simon Kelley <simon@thekelleys.org.uk>
+Date: Thu, 11 May 2017 20:33:21 +0100
+Subject: [PATCH] Fix c7be0164ce6ae89d6f2f0ffea14e2612418dd5da
+
+---
+ src/dhcp.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/dhcp.c b/src/dhcp.c
+index 232e344..f995f0e 100644
+--- a/src/dhcp.c
++++ b/src/dhcp.c
+@@ -224,7 +224,7 @@ void dhcp_packet(time_t now, int pxe_fd)
+ #endif
+ 	
+   if (!indextoname(daemon->dhcpfd, iface_index, ifr.ifr_name) ||
+-      ioctl(daemon->dhcpfd, SIOCGIFFLAGS, &ifr) != -1)
++      ioctl(daemon->dhcpfd, SIOCGIFFLAGS, &ifr) != 0)
+     return;
+   
+   mess = (struct dhcp_packet *)daemon->dhcp_packet.iov_base;
+-- 
+2.9.3
+
diff --git a/dnsmasq.spec b/dnsmasq.spec
index dcd03fb..d0c47a5 100644
--- a/dnsmasq.spec
+++ b/dnsmasq.spec
@@ -13,7 +13,7 @@
 
 Name:           dnsmasq
 Version:        2.77
-Release:        1%{?extraversion:.%{extraversion}}%{?dist}
+Release:        2%{?extraversion:.%{extraversion}}%{?dist}
 Summary:        A lightweight DHCP/caching DNS server
 
 Group:          System Environment/Daemons
@@ -22,6 +22,8 @@ URL:            http://www.thekelleys.org.uk/dnsmasq/
 Source0:        http://www.thekelleys.org.uk/dnsmasq/%{?extrapath}%{name}-%{version}%{?extraversion}.tar.xz
 Source1:        %{name}.service
 
+Patch1:          dnsmasq-2.77rc3-fix-dhcp.patch
+
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  dbus-devel
@@ -55,6 +57,7 @@ query/remove a DHCP server's leases.
 
 %prep
 %setup -q -n %{name}-%{version}%{?extraversion}
+%patch1 -p1
 
 # use /var/lib/dnsmasq instead of /var/lib/misc
 for file in dnsmasq.conf.example man/dnsmasq.8 man/es/dnsmasq.8 src/config.h; do
@@ -140,6 +143,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man1/dhcp_*
 
 %changelog
+* Fri May 12 2017 Petr Menšík <pemensik@redhat.com> - 2.77-2.rc2
+- Fix dhcp
+
 * Thu May 11 2017 Petr Menšík <pemensik@redhat.com> - 2.77-1
 - Update to 2.77rc2