Opened 6 years ago
Last modified 6 years ago
#953 new Bug / Defect
Dual-Stack Server with tls-auth has errors when IPv6 clients connect
| Reported by: | gpf | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | IPv6 | Version: | OpenVPN 2.4.3 (Community Ed) |
| Severity: | Not set (select this one, unless your'e a OpenVPN developer) | Keywords: | |
| Cc: | Steffan Karger, Antonio Quartulli |
Description
I have configured a server with dual-stack support (proto udp6). When clients (OpenVPN connect on iOS) connect via IPv6 they get a timeout on the client side and the server logs bad packet IDs and packet authentication failures.
The error goes away when I configure the server to be IPv6 only by using a "local <ipv6 address>" configuration line.
Attachments (3)
Change History (10)
Changed 6 years ago by
| Attachment: | server-logs.txt added |
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comment:1 Changed 6 years ago by
| Cc: | Steffan Karger Antonio Quartulli added |
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comment:3 Changed 6 years ago by
I also tested with "cipher AES-256-GCM" instead of "auth SHA512" and used tls-crypt (using the iOS beta client) instead of tls-auth. Still can't connect but error changes to:
Oct 31 21:25:51 alita ovpn-vpn[7182]: tls-crypt unwrap error: packet authentication failed Oct 31 21:25:51 alita ovpn-vpn[7182]: TLS Error: tls-crypt unwrapping failed from [AF_INET6]2001:4c50:62f:8800:81f2:c691:1288:d54f:63522
comment:4 follow-up: 5 Changed 6 years ago by
Replying to gpf:
I have configured a server with dual-stack support (proto udp6). When clients (OpenVPN connect on iOS) connect via IPv6 they get a timeout on the client side and the server logs bad packet IDs and packet authentication failures.
The error goes away when I configure the server to be IPv6 only by using a "local <ipv6 address>" configuration line.
I'm seeing this error, too. Is there any workaround, besides turning off TSL-Auth?
comment:5 Changed 6 years ago by
Replying to vzsze:
I'm seeing this error, too. Is there any workaround, besides turning off TSL-Auth?
Not using dualstack. Right now I switched back to v4 only. :(
comment:6 Changed 6 years ago by
Does the problem happen only when connecting with Connect for iOS? Or does it happen with any client?
comment:7 Changed 6 years ago by
I'm using Linux client on Ubuntu 18.04.
Compile time defines: enable_async_push=no enable_comp_stub=no enable_crypto=yes enable_crypto_ofb_cfb=yes enable_debug=yes enable_def_auth=yes enable_dependency_tracking=no enable_dlopen=unknown enable_dlopen_self=unknown enable_dlopen_self_static=unknown enable_fast_install=needless enable_fragment=yes enable_iproute2=yes enable_libtool_lock=yes enable_lz4=yes enable_lzo=yes enable_maintainer_mode=no enable_management=yes enable_multihome=yes enable_pam_dlopen=no enable_pedantic=no enable_pf=yes enable_pkcs11=yes enable_plugin_auth_pam=yes enable_plugin_down_root=yes enable_plugins=yes enable_port_share=yes enable_selinux=no enable_server=yes enable_shared=yes enable_shared_with_static_runtimes=no enable_silent_rules=no enable_small=no enable_static=yes enable_strict=no enable_strict_options=no enable_systemd=yes enable_werror=no enable_win32_dll=yes enable_x509_alt_username=yes with_aix_soname=aix with_crypto_library=openssl with_gnu_ld=yes with_mem_check=no with_sysroot=no
Logs from the Server