Sorry below is the log file on my windows PC. At the moment I am unable to get a log from the router as I think I brick it while downgrading dd-wrt 🙁
But I remember when connecting to openvpn access server my dd-wrt router takes ADSL gateway instead of the ROUTE default_gateway=192.168.0.1
On the router
MTU was 1500
NAT Enabled
Mon Oct 21 18:47:39 2013 OpenVPNAS 2.1.1oOAS Win32-MSVC++ [SSL] [LZO2] built on Jul 29 2010
Mon Oct 21 18:47:39 2013 MANAGEMENT: Connected to management server at 127.0.0.1:48009
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'log on'
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'state on'
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'echo on'
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'bytecount 5'
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'hold off'
Mon Oct 21 18:47:39 2013 MANAGEMENT: CMD 'hold release'
Mon Oct 21 18:47:39 2013 NOTE: OpenVPNAS 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Oct 21 18:47:39 2013 Control Channel Authentication: tls-auth using INLINE static key file
Mon Oct 21 18:47:39 2013 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Oct 21 18:47:39 2013 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Oct 21 18:47:39 2013 LZO compression initialized
Mon Oct 21 18:47:39 2013 Control Channel MTU parms [ L:1542 D:166 EF:66 EB:0 ET:0 EL:0 ]
Mon Oct 21 18:47:39 2013 Socket Buffers: R=[65536->100000] S=[65536->100000]
Mon Oct 21 18:47:39 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon Oct 21 18:47:39 2013 Local Options hash (VER=V4): '504e774e'
Mon Oct 21 18:47:39 2013 Expected Remote Options hash (VER=V4): '14168603'
Mon Oct 21 18:47:39 2013 UDPv4 link local: [undef]
Mon Oct 21 18:47:39 2013 UDPv4 link remote: 173.255.117.74:1194
Mon Oct 21 18:47:39 2013 MANAGEMENT: >STATE:1382361459,WAIT,,,
Mon Oct 21 18:47:40 2013 MANAGEMENT: >STATE:1382361460,AUTH,,,
Mon Oct 21 18:47:40 2013 TLS: Initial packet from 173.255.117.74:1194, sid=b40f615a 325e5ab3
Mon Oct 21 18:47:40 2013 VERIFY OK: depth=1, /CN=OpenVPN_CA
Mon Oct 21 18:47:40 2013 VERIFY OK: nsCertType=SERVER
Mon Oct 21 18:47:40 2013 VERIFY OK: depth=0, /CN=OpenVPN_Server
Mon Oct 21 18:47:43 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Oct 21 18:47:43 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Oct 21 18:47:43 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Oct 21 18:47:43 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Oct 21 18:47:43 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Mon Oct 21 18:47:43 2013 [OpenVPN_Server] Peer Connection Initiated with 173.255.117.74:1194
Mon Oct 21 18:47:44 2013 MANAGEMENT: >STATE:1382361464,GET_CONFIG,,,
Mon Oct 21 18:47:45 2013 SENT CONTROL [OpenVPN_Server]: 'PUSH_REQUEST' (status=1)
Mon Oct 21 18:47:45 2013 PUSH: Received control message: 'PUSH_REPLY,explicit-exit-notify,topology subnet,route-delay 5 30,dhcp-pre-release,dhcp-renew,dhcp-release,route-metric 101,ping 12,ping-restart 50,comp-lzo yes,redirect-gateway def1,redirect-gateway bypass-dhcp,redirect-gateway autolocal,route-gateway 172.27.232.1,dhcp-option DNS 8.8.8.8,dhcp-option DNS 8.8.4.4,register-dns,block-ipv6,ifconfig 172.27.232.13 255.255.248.0'
Mon Oct 21 18:47:45 2013 Unrecognized option or missing parameter(s) in [PUSH-OPTIONS]:18: block-ipv6 (2.1.1oOAS)
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: timers and/or timeouts modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: explicit notify parm(s) modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: LZO parms modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: --ifconfig/up options modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: route options modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: route-related options modified
Mon Oct 21 18:47:45 2013 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
Mon Oct 21 18:47:45 2013 ROUTE default_gateway=192.168.0.1
Mon Oct 21 18:47:45 2013 MANAGEMENT: >STATE:1382361465,ASSIGN_IP,,172.27.232.13,
Mon Oct 21 18:47:45 2013 TAP-WIN32 device [Local Area Connection 2] opened: \\.\Global\{F6730C07-0572-4AC1-9066-52010847B0A7}.tap
Mon Oct 21 18:47:45 2013 TAP-Win32 Driver Version 9.7
Mon Oct 21 18:47:45 2013 TAP-Win32 MTU=1500
Mon Oct 21 18:47:45 2013 Set TAP-Win32 TUN subnet mode network/local/netmask = 172.27.232.0/172.27.232.13/255.255.248.0 [SUCCEEDED]
Mon Oct 21 18:47:45 2013 Notified TAP-Win32 driver to set a DHCP IP/netmask of 172.27.232.13/255.255.248.0 on interface {F6730C07-0572-4AC1-9066-52010847B0A7} [DHCP-serv: 172.27.239.254, lease-time: 31536000]
Mon Oct 21 18:47:45 2013 Successful ARP Flush on interface [41] {F6730C07-0572-4AC1-9066-52010847B0A7}
Mon Oct 21 18:47:45 2013 NOTE: Release of DHCP-assigned IP address lease on TAP-Win32 adapter failed: The system cannot find the file specified. (code=2)
Mon Oct 21 18:48:08 2013 TAP: DHCP address renewal succeeded
Mon Oct 21 18:48:13 2013 TEST ROUTES: 1/1 succeeded len=0 ret=1 a=0 u/d=up
Mon Oct 21 18:48:13 2013 ROUTE remote_host is NOT LOCAL
Mon Oct 21 18:48:13 2013 C:\Windows\system32\route.exe ADD 173.255.117.74 MASK 255.255.255.255 192.168.0.1
Mon Oct 21 18:48:13 2013 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=20 and dwForwardType=4
Mon Oct 21 18:48:13 2013 Route addition via IPAPI succeeded [adaptive]
Mon Oct 21 18:48:13 2013 C:\Windows\system32\route.exe ADD 0.0.0.0 MASK 128.0.0.0 172.27.232.1
Mon Oct 21 18:48:13 2013 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4
Mon Oct 21 18:48:13 2013 Route addition via IPAPI succeeded [adaptive]
Mon Oct 21 18:48:13 2013 C:\Windows\system32\route.exe ADD 128.0.0.0 MASK 128.0.0.0 172.27.232.1
Mon Oct 21 18:48:13 2013 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4
Mon Oct 21 18:48:13 2013 Route addition via IPAPI succeeded [adaptive]
Mon Oct 21 18:48:13 2013 Initialization Sequence Completed
Mon Oct 21 18:48:13 2013 MANAGEMENT: >STATE:1382361493,CONNECTED,SUCCESS,172.27.232.13,173.255.117.74
Mon Oct 21 18:48:14 2013 C:\WINDOWS\system32\net.exe stop dnscache
The DNS Client service is stopping..
The DNS Client service could not be stopped.
Mon Oct 21 18:48:20 2013 C:\WINDOWS\system32\net.exe start dnscache
