Fail to start up the openVPN server, follow every step on wiki, install, get CA key, server key, client key, edit server.conf etc
ubuntu@ip-10-20-1-154:/etc/openvpn$ sudo openvpn server.conf
Tue Feb 19 20:51:31 2019 OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Sep 5 2018
Tue Feb 19 20:51:31 2019 library versions: OpenSSL 1.1.0g 2 Nov 2017, LZO 2.08
Tue Feb 19 20:51:31 2019 Diffie-Hellman initialized with 2048 bit key
Tue Feb 19 20:51:31 2019 ROUTE_GATEWAY 10.20.1.129/255.255.255.128 IFACE=eth0 HWADDR=06:83:82:d2:c8:b8
Tue Feb 19 20:51:31 2019 TUN/TAP device tun1 opened
Tue Feb 19 20:51:31 2019 TUN/TAP TX queue length set to 100
Tue Feb 19 20:51:31 2019 do_ifconfig, tt->did_ifconfig_ipv6_setup=0
Tue Feb 19 20:51:31 2019 /sbin/ip link set dev tun1 up mtu 1500
Tue Feb 19 20:51:31 2019 /sbin/ip addr add dev tun1 local 10.8.0.1 peer 10.8.0.2
Tue Feb 19 20:51:31 2019 /sbin/ip route add 10.8.0.0/24 via 10.8.0.2
Tue Feb 19 20:51:31 2019 Could not determine IPv4/IPv6 protocol. Using AF_INET
Tue Feb 19 20:51:31 2019 Socket Buffers: R=[212992->212992] S=[212992->212992]
Tue Feb 19 20:51:31 2019 TCP/UDP: Socket bind failed on local address [AF_INET][undef]:1194: Address already in use (errno=98)
Tue Feb 19 20:51:31 2019 Exiting due to fatal error
Tue Feb 19 20:51:31 2019 /sbin/ip route del 10.8.0.0/24
Tue Feb 19 20:51:31 2019 Closing TUN/TAP interface
Tue Feb 19 20:51:31 2019 /sbin/ip addr del dev tun1 local 10.8.0.1 peer 10.8.0.2
ubuntu@ip-10-20-1-154:/etc/openvpn$
it tries to create "tun1" interface, but my system already has "tun0" from prior failure try.. (can't delete it anyway)
ubuntu@ip-10-20-1-154:/etc/openvpn$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
link/ether 06:83:82:d2:c8:b8 brd ff:ff:ff:ff:ff:ff
inet 10.20.1.154/25 brd 10.20.1.255 scope global dynamic eth0
valid_lft 2705sec preferred_lft 2705sec
inet6 fe80::483:82ff:fed2:c8b8/64 scope link
valid_lft forever preferred_lft forever
3: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 100
link/none
any suggestion ?
thanks much
