diff --git a/dhcp.spec b/dhcp.spec
index cc5bdb7..a7c8563 100644
--- a/dhcp.spec
+++ b/dhcp.spec
@@ -29,18 +29,24 @@ Source19:	dhcrelay.tmpfiles
 # sysusers.d(5) (systemd-sysusers)
 Source20:	isc-dhcpd.conf
 Source21:	isc-dhcp-client.conf
+# Per-interface dhclient service from Arch Linux (modified)
 Source22:	dhclient@.service
 Source100:	ROSA-NEWS
 
 Patch17:	dhcp-4.2.0-add_timeout_when_NULL.patch
 Patch18:	dhcp-4.3.0-64_bit_lease_parse.patch
 Patch19:	Arch-0002-iproute2.patch
-BuildRequires:	bind-devel
+
+# Starting from dhcp 4.x built in Bind libs are used
+#BuildRequires:	bind-devel
 BuildRequires:	groff-base
 BuildRequires:	groff-for-man
 BuildRequires:	libtool
 BuildRequires:	openldap-devel
 BuildRequires:	systemd-units
+# --with-ldap-gssapi
+BuildRequires:	pkconfig(krb5-gssapi)
+BuildRequires:	pkgconfig(libcap-ng)
 Requires(post,preun): rpm-helper
 
 %description 
@@ -163,9 +169,6 @@ pushd bind ; tar -xvf bind.tar.gz >/dev/null ; popd
 
 %build
 %serverbuild_hardened
-##/bin/cp configure.ac+lt configure.ac
-#%autoreconf
-##autoreconf -ifv
 %configure2_5x \
     --with-srv-lease-file=%{var_dhcpd}/dhcpd.leases \
     --with-srv6-lease-file=%{var_dhcpd}/dhcpd6.leases \
@@ -178,7 +181,9 @@ pushd bind ; tar -xvf bind.tar.gz >/dev/null ; popd
     --with-relay-pid-file=/run/dhcrelay/dhcrelay.pid \
     --enable-paranoia \
     --enable-early-chroot \
-    --with-ldapcrypto
+    --with-ldap \
+    --with-ldapcrypto \
+    --with-ldap-gssapi
 make
 
 %install
@@ -306,11 +311,11 @@ EOF
 %_preun_service dhcrelay
 
 %post client
-#touch %{var_dhclient}/dhclient.leases
 # migrate from root:root as it was before ROSA package v4.4.1
 # create this directory if it does not esist and then chmod it to allow dhcpd to work properly
 %sysusers_create isc-dhcp-client.conf
 [ ! -d %{var_dhclient}/ ] && mkdir -p %{var_dhclient}/
+touch %{var_dhclient}/dhclient.leases || true
 [ -d %{var_dhclient} ] && chown -R isc-dhcp-client:isc-dhcp-client %{var_dhclient}/
 %tmpfiles_create dhclient.conf