WIFI turns off as soon as OpenVpN Client connects

[rcir888]

I’m trying to establish a VPN connection between my Kindle Fire 7 (12th Generation) and my Linksys WRT3200ACM router that has as its OS OpenWrt-N3, firmware version 23.05.2. I’ve been able to connect from my computer that has OpenVPN client to the OpenVPN server on the router, but when I try to connect from the tablet using the OpenVPN Connect client for Android, the connection at first connects then almost immediately afterwards disconnects because the WIFI disconnects. I cleared the OpenVPN Connect cache on the tablet, and uninstalled the Norton antivirus on the tablet but the problem persists. Here’s the tablet log with the WAN IP address of the router redacted:

[Jan 28, 2024, 11:56:10] ----- OpenVPN Start -----

[Jan 28, 2024, 11:56:10] EVENT: CORE_THREAD_ACTIVE

[Jan 28, 2024, 11:56:10] OpenVPN core 3.8.4connectX(3.git::c424d46c:RelWithDebInfo) android arm64 64-bit PT_PROXY

[Jan 28, 2024, 11:56:10] Frame=512/2112/512 mssfix-ctrl=1250

[Jan 28, 2024, 11:56:10] NOTE: This configuration contains options that were not used:

[Jan 28, 2024, 11:56:10] Unsupported option (ignored)

[Jan 28, 2024, 11:56:10] 0 [user] [nobody]

[Jan 28, 2024, 11:56:10] 1 [group] [nogroup]

[Jan 28, 2024, 11:56:10] 6 [auth-nocache]

[Jan 28, 2024, 11:56:10] Contacting -.-.-.-:1194 via UDP

[Jan 28, 2024, 11:56:10] EVENT: RESOLVE

[Jan 28, 2024, 11:56:10] EVENT: WAIT

[Jan 28, 2024, 11:56:10] Connecting to [-.-.-.-]:1194 (-.-.-.-) via UDP

[Jan 28, 2024, 11:56:10] EVENT: CONNECTING

[Jan 28, 2024, 11:56:10] Tunnel Options:V4,dev-type tun,link-mtu 1541,tun-mtu 1500,proto UDPv4,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-client

[Jan 28, 2024, 11:56:10] Creds: UsernameEmpty/PasswordEmpty

[Jan 28, 2024, 11:56:10] Sending Peer Info:
IV_VER=3.8.4connectX
IV_PLAT=android
IV_NCP=2
IV_TCPNL=1
IV_PROTO=990
IV_MTU=1600
IV_CIPHERS=AES-128-CBC:AES-192-CBC:AES-256-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM:CHACHA20-POLY1305
IV_AUTO_SESS=1
IV_GUI_VER=net.openvpn.connect.android_3.4.0-9755
IV_SSO=webauth,openurl,crtext
IV_BS64DL=1


[Jan 28, 2024, 11:56:10] VERIFY OK: depth=1, /CN=Easy-RSA CA, signature: RSA-SHA256

[Jan 28, 2024, 11:56:10] VERIFY OK: depth=0, /CN=server, signature: RSA-SHA256

[Jan 28, 2024, 11:56:10] SSL Handshake: peer certificate: CN=server, 2048 bit RSA, cipher: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 Kx=any Au=any Enc=CHACHA20/POLY1305(256) Mac=AEAD


[Jan 28, 2024, 11:56:10] Session is ACTIVE

[Jan 28, 2024, 11:56:10] EVENT: GET_CONFIG

[Jan 28, 2024, 11:56:10] Sending PUSH_REQUEST to server...

[Jan 28, 2024, 11:56:10] OPTIONS:
0 [dhcp-option] [DNS] [192.168.9.1]
1 [dhcp-option] [DOMAIN] [lan]
2 [redirect-gateway] [def1]
3 [persist-tun]
4 [persist-key]
5 [route-gateway] [192.168.9.1]
6 [topology] [subnet]
7 [ping] [10]
8 [ping-restart] [60]
9 [ifconfig] [192.168.9.2] [255.255.255.0]
10 [peer-id] [0]
11 [cipher] [AES-256-GCM]
12 [block-ipv6]
13 [block-ipv4]


[Jan 28, 2024, 11:56:10] PROTOCOL OPTIONS:
cipher: AES-256-GCM
digest: NONE
key-derivation: OpenVPN PRF
compress: NONE
peer ID: 0
control channel: tls-crypt v2 enabled

[Jan 28, 2024, 11:56:10] EVENT: ASSIGN_IP

[Jan 28, 2024, 11:56:10] Connected via tun

[Jan 28, 2024, 11:56:10] EVENT: CONNECTED info='-.-.-.-:1194 (-.-.-.-) via /UDP on tun/192.168.9.2/ gw=[192.168.9.1/] mtu=(default)'

[Jan 28, 2024, 11:56:11] UDP send exception: send: Network is unreachable

[Jan 28, 2024, 11:56:11] EVENT: PAUSE trans=TO_DISCONNECTED

[Jan 28, 2024, 11:56:14] EVENT: RESUME

[Jan 28, 2024, 11:56:14] EVENT: RECONNECTING

[Jan 28, 2024, 11:56:14] EVENT: RESOLVE

[Jan 28, 2024, 11:56:14] Contacting -.-.-.-:1194 via UDP

[Jan 28, 2024, 11:56:14] EVENT: WAIT

[Jan 28, 2024, 11:56:14] Connecting to [-.-.-.-]:1194 (-.-.-.-) via UDP

[Jan 28, 2024, 11:56:14] EVENT: CONNECTING

[Jan 28, 2024, 11:56:14] Tunnel Options:V4,dev-type tun,link-mtu 1541,tun-mtu 1500,proto UDPv4,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-client

[Jan 28, 2024, 11:56:14] Creds: UsernameEmpty/PasswordEmpty

[Jan 28, 2024, 11:56:14] Sending Peer Info:
IV_VER=3.8.4connectX
IV_PLAT=android
IV_NCP=2
IV_TCPNL=1
IV_PROTO=990
IV_MTU=1600
IV_CIPHERS=AES-128-CBC:AES-192-CBC:AES-256-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM:CHACHA20-POLY1305
IV_AUTO_SESS=1
IV_GUI_VER=net.openvpn.connect.android_3.4.0-9755
IV_SSO=webauth,openurl,crtext
IV_BS64DL=1


[Jan 28, 2024, 11:56:14] VERIFY OK: depth=1, /CN=Easy-RSA CA, signature: RSA-SHA256

[Jan 28, 2024, 11:56:14] VERIFY OK: depth=0, /CN=server, signature: RSA-SHA256

[Jan 28, 2024, 11:56:14] SSL Handshake: peer certificate: CN=server, 2048 bit RSA, cipher: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 Kx=any Au=any Enc=CHACHA20/POLY1305(256) Mac=AEAD


[Jan 28, 2024, 11:56:14] Session is ACTIVE

[Jan 28, 2024, 11:56:14] Sending PUSH_REQUEST to server...

[Jan 28, 2024, 11:56:14] EVENT: GET_CONFIG

[Jan 28, 2024, 11:56:14] OPTIONS:
0 [dhcp-option] [DNS] [192.168.9.1]
1 [dhcp-option] [DOMAIN] [lan]
2 [redirect-gateway] [def1]
3 [persist-tun]
4 [persist-key]
5 [route-gateway] [192.168.9.1]
6 [topology] [subnet]
7 [ping] [10]
8 [ping-restart] [60]
9 [ifconfig] [192.168.9.2] [255.255.255.0]
10 [peer-id] [1]
11 [cipher] [AES-256-GCM]
12 [block-ipv6]
13 [block-ipv4]


[Jan 28, 2024, 11:56:14] PROTOCOL OPTIONS:
cipher: AES-256-GCM
digest: NONE
key-derivation: OpenVPN PRF
compress: NONE
peer ID: 1
control channel: tls-crypt v2 enabled

[Jan 28, 2024, 11:56:14] EVENT: ASSIGN_IP

[Jan 28, 2024, 11:56:14] Connected via tun

[Jan 28, 2024, 11:56:15] EVENT: CONNECTED info='-.-.-.-:1194 (-.-.-.-) via /UDP on tun/192.168.9.2/ gw=[192.168.9.1/] mtu=(default)' trans=TO_CONNECTED

[Jan 28, 2024, 11:56:17] EVENT: PAUSE trans=TO_DISCONNECTED

[Jan 28, 2024, 11:56:20] EVENT: RESUME

[Jan 28, 2024, 11:56:20] EVENT: RECONNECTING

[Jan 28, 2024, 11:56:20] EVENT: RESOLVE

[Jan 28, 2024, 11:56:20] Contacting -.-.-.-:1194 via UDP

[Jan 28, 2024, 11:56:20] EVENT: WAIT

[Jan 28, 2024, 11:56:20] Connecting to [-.-.-.-]:1194 (-.-.-.-) via UDP

[Jan 28, 2024, 11:56:20] EVENT: CONNECTING

[Jan 28, 2024, 11:56:20] Tunnel Options:V4,dev-type tun,link-mtu 1541,tun-mtu 1500,proto UDPv4,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-client

[Jan 28, 2024, 11:56:20] Creds: UsernameEmpty/PasswordEmpty

[Jan 28, 2024, 11:56:20] Sending Peer Info:
IV_VER=3.8.4connectX
IV_PLAT=android
IV_NCP=2
IV_TCPNL=1
IV_PROTO=990
IV_MTU=1600
IV_CIPHERS=AES-128-CBC:AES-192-CBC:AES-256-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM:CHACHA20-POLY1305
IV_AUTO_SESS=1
IV_GUI_VER=net.openvpn.connect.android_3.4.0-9755
IV_SSO=webauth,openurl,crtext
IV_BS64DL=1


[Jan 28, 2024, 11:56:20] VERIFY OK: depth=1, /CN=Easy-RSA CA, signature: RSA-SHA256

[Jan 28, 2024, 11:56:20] VERIFY OK: depth=0, /CN=server, signature: RSA-SHA256

[Jan 28, 2024, 11:56:20] SSL Handshake: peer certificate: CN=server, 2048 bit RSA, cipher: TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 Kx=any Au=any Enc=CHACHA20/POLY1305(256) Mac=AEAD


[Jan 28, 2024, 11:56:20] Session is ACTIVE

[Jan 28, 2024, 11:56:20] EVENT: GET_CONFIG

[Jan 28, 2024, 11:56:20] Sending PUSH_REQUEST to server...

[Jan 28, 2024, 11:56:20] OPTIONS:
0 [dhcp-option] [DNS] [192.168.9.1]
1 [dhcp-option] [DOMAIN] [lan]
2 [redirect-gateway] [def1]
3 [persist-tun]
4 [persist-key]
5 [route-gateway] [192.168.9.1]
6 [topology] [subnet]
7 [ping] [10]
8 [ping-restart] [60]
9 [ifconfig] [192.168.9.2] [255.255.255.0]
10 [peer-id] [0]
11 [cipher] [AES-256-GCM]
12 [block-ipv6]
13 [block-ipv4]

[rcir888]

I changed a couple of things on the router that hosts the OpenVPN server. I fixed the time which was off because it had the wrong time zone configured, and I added a DNS server address to the router even though another server on the local network manages DHCP and DNS. The client now connects and stays connected.