Could not connect to my ISP via L2TP.
Firmware: latest https://api.turris.cz/openwrt-repo/omnia/omnia-medkit-latest.tar.gz
Kernel log:
[ 275.114493] l2tp_core: Unknown symbol udp_sock_create4 (err 0)
[ 275.114624] l2tp_core: Unknown symbol setup_udp_tunnel_sock (err 0)
[ 275.114689] l2tp_core: Unknown symbol udp_sock_create6 (err 0)
[ 275.143918] l2tp_netlink: Unknown symbol l2tp_session_set_header_len (err 0)
[ 275.143993] l2tp_netlink: Unknown symbol l2tp_tunnel_delete (err 0)
[ 275.144066] l2tp_netlink: Unknown symbol l2tp_tunnel_find_nth (err 0)
[ 275.144129] l2tp_netlink: Unknown symbol l2tp_tunnel_create (err 0)
[ 275.144190] l2tp_netlink: Unknown symbol l2tp_session_find_nth (err 0)
[ 275.144251] l2tp_netlink: Unknown symbol l2tp_session_find_by_ifname (err 0)
[ 275.144327] l2tp_netlink: Unknown symbol l2tp_session_find (err 0)
[ 275.144393] l2tp_netlink: Unknown symbol l2tp_tunnel_find (err 0)
[ 275.624149] l2tp_ppp: Unknown symbol l2tp_session_set_header_len (err 0)
[ 275.624248] l2tp_ppp: Unknown symbol l2tp_xmit_skb (err 0)
[ 275.624371] l2tp_ppp: Unknown symbol l2tp_nl_unregister_ops (err 0)
[ 275.624443] l2tp_ppp: Unknown symbol l2tp_tunnel_find_nth (err 0)
[ 275.624506] l2tp_ppp: Unknown symbol l2tp_session_delete (err 0)
[ 275.624570] l2tp_ppp: Unknown symbol l2tp_session_create (err 0)
[ 275.624635] l2tp_ppp: Unknown symbol l2tp_tunnel_create (err 0)
[ 275.624697] l2tp_ppp: Unknown symbol l2tp_session_find_nth (err 0)
[ 275.624805] l2tp_ppp: Unknown symbol l2tp_nl_register_ops (err 0)
[ 275.624912] l2tp_ppp: Unknown symbol __l2tp_session_unhash (err 0)
[ 275.624978] l2tp_ppp: Unknown symbol l2tp_session_queue_purge (err 0)
[ 275.625049] l2tp_ppp: Unknown symbol l2tp_session_find (err 0)
[ 275.625116] l2tp_ppp: Unknown symbol l2tp_udp_encap_recv (err 0)
[ 275.625182] l2tp_ppp: Unknown symbol l2tp_tunnel_find (err 0)
[ 275.625245] l2tp_ppp: Unknown symbol l2tp_session_free (err 0)
installed packages:
kmod-l2tp 4.4.13+7-1-05df79f635…6-7
kmod-l2tp-eth 4.4.13+7-1-05df79f635…6-7
kmod-l2tp-ip 4.4.13+7-1-05df79f635…6-7
kmod-pppol2tp 4.4.13+7-1-05df79f635…6-7
ppp-mod-pppol2tp 2.4.7-10
xl2tpd devel-20151125-2
from Connect to ISP using L2TP with dual access:
Many ISP’s in Russia, Ukraine, Israel and other countries offer connection using Layer 2 Tunneling Protocol. In many cases ISP provides a “local” network, where internal resources of ISP are located (ftp, forums, etc.) Also users can exchange files through “local” network by P2P programs, like Direct Connect|. Traffic in “local” network is free or not limited by speed. This is called Dual Access.
The only OpenWrt package which uses the kernel to pass L2TP traffic is openl2tp. This guide will help to configure OpenWrt to connect to ISP using this package.