Unable to start osmo-ggsn with -g or --gtp-linux options

Hello, I compiled osmo-ggsn and was trying to run it as per the instructions present on https://osmocom.org/projects/openggsn/wiki/Kernel_GTP But when I try to start osmo-ggsn *using -g or --gtp-linux*, it says invalid option. Please let me know how to start it using gtp kernel. I have modprobed gtp.ko successfully. [root@localhost osmo-ggsn]# lsmod |grep gtp gtp 28672 0 ip6_udp_tunnel 16384 1 gtp udp_tunnel 16384 1 gtp [root@localhost examples]# osmo-ggsn --gtp-linux -c osmo-ggsn.cfg -d *osmo-ggsn: unrecognized option '--gtp-linux'* <0002> ggsn.c:159 APN(internet): Starting <0002> ggsn.c:162 APN(internet): Opening TUN device tun4 <0002> ggsn.c:167 APN(internet): Opened TUN device tun4 <0002> ggsn.c:178 APN(internet): Setting tun IP address 176.16.222.0/24 <0002> ggsn.c:224 APN(internet): Creating IPv4 pool 176.16.222.0/24 <0002> ggsn.c:245 APN(internet): Successfully started <0002> ggsn.c:159 APN(inet6): Starting <0002> ggsn.c:162 APN(inet6): Opening TUN device tun6 <0002> ggsn.c:167 APN(inet6): Opened TUN device tun6 <0002> ggsn.c:190 APN(inet6): Setting tun IPv6 address 2001:780:44:2000::/56 <0002> ggsn.c:236 APN(inet6): Creating IPv6 pool 2001:780:44:2000::/56 <0002> ggsn.c:245 APN(inet6): Successfully started <0002> ggsn.c:159 APN(inet46): Starting <0002> ggsn.c:162 APN(inet46): Opening TUN device tun46 <0002> ggsn.c:167 APN(inet46): Opened TUN device tun46 <0002> ggsn.c:178 APN(inet46): Setting tun IP address 176.16.46.0/24 <0002> ggsn.c:190 APN(inet46): Setting tun IPv6 address 2001:780:44:2100::/56 <0002> ggsn.c:224 APN(inet46): Creating IPv4 pool 176.16.46.0/24 <0002> ggsn.c:236 APN(inet46): Creating IPv6 pool 2001:780:44:2100::/56 <0002> ggsn.c:245 APN(inet46): Successfully started <0002> ggsn.c:687 GGSN(ggsn0): Starting GGSN <000d> gtp.c:705 GTP: gtp_newgsn() started at 192.168.11.128 <0002> ggsn.c:724 GGSN(ggsn0): Successfully started <0005> telnet_interface.c:102 telnet at 127.0.0.1 4260 <000c> control_if.c:788 CTRL at 127.0.0.1 4257 Also, I tried executing gtp-tunnel list but it gives empty output. [root@localhost tools]# ./gtp-tunnel list [root@localhost tools]# Please help. Thanks, Ravi <https://osmocom.org/projects/openggsn/wiki/Kernel_GTP>