Help with macOS client config

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Anders Östling

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Feb 27, 2021, 12:19:31 PM2/27/21

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I have an OpenVPN server running on a remote Linux host. My client is on a Mac/Big Sur system at home. I have created a basic client.conf file and I am able to connect. However, no routes are created so I cant do anything useful.

Can someone please have a look at my config and give some advise!

dev tun

remote 194.22.x.y 1195

secret static-hplts.key

ifconfig 10.8.0.2 10.8.0.1

The client log says

*Tunnelblick: macOS 11.2.1 (20D74); Tunnelblick 3.8.4a (build 5601); Admin user

git commit 73f5ce7b5ccd45d0286a1c9fc30064a914046d3f

The Tunnelblick.app process is not being translated

System Integrity Protection is enabled

2021-02-27 18:03:45.589438 Outgoing Static Key Encryption: Using 160 bit message hash 'SHA1' for HMAC authentication

2021-02-27 18:03:45.589486 Incoming Static Key Encryption: Cipher 'BF-CBC' initialized with 128 bit key

2021-02-27 18:03:45.589503 WARNING: INSECURE cipher with block size less than 128 bit (64 bit). This allows attacks like SWEET32. Mitigate by using a --cipher with a larger block size (e.g. AES-256-CBC).

2021-02-27 18:03:45.589517 Incoming Static Key Encryption: Using 160 bit message hash 'SHA1' for HMAC authentication

2021-02-27 18:03:45.590844 Opening utun (connect(AF_SYS_CONTROL)): Resource busy (errno=16)

2021-02-27 18:03:45.590883 Opening utun (connect(AF_SYS_CONTROL)): Resource busy (errno=16)

2021-02-27 18:03:45.590899 Opening utun (connect(AF_SYS_CONTROL)): Resource busy (errno=16)

2021-02-27 18:03:45.590913 Opening utun (connect(AF_SYS_CONTROL)): Resource busy (errno=16)

2021-02-27 18:03:45.591242 Opened utun device utun4

2021-02-27 18:03:45.591306 MANAGEMENT: >STATE:1614445425,ASSIGN_IP,,10.8.0.2,,,,

2021-02-27 18:03:45.591324 /sbin/ifconfig utun4 delete

ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address

2021-02-27 18:03:45.595377 NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure

2021-02-27 18:03:45.595461 /sbin/ifconfig utun4 10.8.0.2 10.8.0.1 mtu 1500 netmask 255.255.255.255 up

18:03:45 *Tunnelblick: **********************************************

18:03:45 *Tunnelblick: Start of output from client.up.tunnelblick.sh

WARNING: $route_vpn_gateway is empty

18:03:47 *Tunnelblick: NOTE: No network configuration changes need to be made.

18:03:47 *Tunnelblick: WARNING: Will NOT monitor for other network configuration changes.

18:03:47 *Tunnelblick: WARNING: Will NOT disable IPv6 settings.

18:03:47 *Tunnelblick: DNS servers '8.8.8.8 10.0.2.50' were set manually

18:03:47 *Tunnelblick: DNS servers '8.8.8.8 10.0.2.50' will be used for DNS queries when the VPN is active

18:03:47 *Tunnelblick: /usr/sbin/discoveryutil not present. Not flushing the DNS cache via discoveryutil

18:03:47 *Tunnelblick: Notified mDNSResponder that the DNS cache was flushed

18:03:47 *Tunnelblick: Not notifying mDNSResponderHelper that the DNS cache was flushed because it is not running

18:03:47 *Tunnelblick: End of output from client.up.tunnelblick.sh

18:03:47 *Tunnelblick: **********************************************

2021-02-27 18:03:47.872173 TCP/UDP: Preserving recently used remote address: [AF_INET]194.22.56.174:1195

2021-02-27 18:03:47.872263 Socket Buffers: R=[786896->786896] S=[9216->9216]

2021-02-27 18:03:47.872292 UDP link local (bound): [AF_INET][undef]:1194

2021-02-27 18:03:47.872304 UDP link remote: [AF_INET]194.22.56.174:1195