dhcp: Fix IPv6 files paths

Use IPv6 file locations consistent with those set for IPv4 instead of keeping
the defaults, which use different locations.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/dhcp/dhcp.mk

@@ -16,10 +16,15 @@ DHCP_CONF_ENV = \
 DHCP_CONF_OPT = \
 	--localstatedir=/var/lib/dhcp \
 	--with-srv-lease-file=/var/lib/dhcp/dhcpd.leases \
+	--with-srv6-lease-file=/var/lib/dhcp/dhcpd6.leases \
 	--with-cli-lease-file=/var/lib/dhcp/dhclient.leases \
+	--with-cli6-lease-file=/var/lib/dhcp/dhclient6.leases \
 	--with-srv-pid-file=/var/run/dhcpd.pid \
+	--with-srv6-pid-file=/var/run/dhcpd6.pid \
 	--with-cli-pid-file=/var/run/dhclient.pid \
-	--with-relay-pid-file=/var/run/dhcrelay.pid
+	--with-cli6-pid-file=/var/run/dhclient6.pid \
+	--with-relay-pid-file=/var/run/dhcrelay.pid \
+	--with-relay6-pid-file=/var/run/dhcrelay6.pid
 
 ifeq ($(BR2_PACKAGE_DHCP_SERVER_DELAYED_ACK),y)
         DHCP_CONF_OPT += --enable-delayed-ack