encapsulation cmd missed in OsmoSGSN 1.9.0

hi. i just installed the system followed the instructions on https://security-bits.de/research/cellular/lab_setup. but it looks the gb(ns) configuration.command encapsulation missed in this version. OsmoSGSN(config-ns)# list help list [with-flags] show vty-attributes show vty-attributes (application|library|global) write terminal write file [PATH] write memory write show running-config exit end timer (tns-block|tns-block-retries|tns-reset|tns-reset-retries|tns-test|tns-alive|tns-alive-retries|tsns-prov|tsns-size-retries|tsns-config-retries|tsns-procedures-retries) <0-65535> nse <0-65535> [ip-sns-role-sgsn] no nse <0-65535> bind (fr|udp) ID no bind ID ip-sns-default bind ID no ip-sns-default bind ID OsmoSGSN(config-ns)# libosmocore/bionic 0.9.0-7 amd64 libosmocore-dbg/bionic 0.9.0-7 amd64 libosmocore-dev/bionic 0.9.0-7 amd64 br,thornton.