Building OpenWRT with OpenL2TP
This is just a quick dump of the process of building current git of OpenWRT for OpenL2TP. Complete blog post about OpenL2TP on OpenWRT 2.4 will be available later.
Kernel
Patched pppol2tp.c
, removed NULL assignment to nonexistent iptables structure.
After reflash:
udp_prot
is exported only when
#if defined (CONFIG_IPV6_MODULE) || defined (CONFIG_KHTTPD) || defined (CONFIG_KHTTPD_MODULE) || defined (CONFIG_IP_SCTP_MODULE)
Selected CONFIG_IPV6_MODULE
IPV6 Module is not installed then, but symbol is exported.
root@OpenWrt:/etc/init.d# openl2tpd -R -f -D Start, trace_flags=00000000 (debug enabled) OpenL2TP V1.6, (c) Copyright 2004,2005,2006,2007,2008 Katalix Systems Ltd. Loading plugin /usr/lib/openl2tp/ppp_unix.so, version V1.5 no entry for l2tp in /etc/services and -u not used Cleaning up before exiting Unloading plugin /usr/lib/openl2tp/ppp_unix.so
So, either /etc/services
need to be tweaked (HEY, they are empty)! or -u 1701
must be given.
Disable httpd service:
Debugging OpenL2TP:
l2tp> tunnel create dest_ipaddr=10.0.0.24 tunnel_name=vpn2 l2tp> session create tunnel_name=vpn2 user_name=xxx@internet.beeline.ua user_password=yyy
pppd 2.4.4 started as
pppd debug kdebug 7 noipdefault sync nodetach user xxx@internet.beeline.ua \ password yyy local noauth noaccomp nopcomp nobsdcomp \ nodeflate nopredictor1 novj novjccomp noendpoint nomp noproxyarp \ plugin pppol2tp.so plugin openl2tp.so pppol2tp 18 pppol2tp_tunnel_id 57957 \ pppol2tp_session_id 9843 pppol2tp_debug_mask 15
dies with
Reason: openwrt/package/ppp/patches/200-makefile.patch
sets HAVE_MULTILINK
disabled despite:
noendpoint is supported, so we remove nomp thing
Reason: INCLUDE_DIR
is set in OpenL2TP and it points to system include dir
Changing the Makefile
to override INCLUDE DIR
as well in openwrt/feeds/packages/net/openl2tp/Makefile
ARGHHHH!!!:
Reason: incorrect #define for 2.4 kernel
Session is now OK