[OpenWrt Wiki] package: xl2tpd
https://openwrt.org/packages/pkgdata/xl2tpd19.12.2021 · Name: xl2tpd. Version: 1.3.16-2. Description: l2tpd is the open source implementation of the L2TP tunneling protocol (RFC2661).\\. It does implement both LAC and LNS role in a L2TP networking architecture. The\\ main goal of this protocol is to tunnel PPP frame trough an IP network.\\.