Currently tinc init script will delete the generated configuration folder and then check if it will not exists in order to create it.

net/tinc/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=tinc
 PKG_VERSION:=1.0.24
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.tinc-vpn.org/packages

net/tinc/files/tinc.init

@@ -135,10 +135,8 @@ prepare_net() {
 
 	section_enabled "$s" || return 1
 
-        # rm old config
-        rm -rf "$TMP_TINC/$s/"
-
-	[ ! -d "$TMP_TINC/$s" ] && mkdir -p "$TMP_TINC/$s"
+	[ -d "$TMP_TINC/$s" ] && rm -rf "$TMP_TINC/$s/"
+	mkdir -p "$TMP_TINC/$s"
 	[ -d "/etc/tinc/$s" ] && cp -r "/etc/tinc/$s" "$TMP_TINC/"
 
 	# append flags