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Gentleman
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Aug 06, 2025

f5fpc unable to connect on Ubuntu 25.04

I’ve been using the f5fpc client on Ubuntu to connect to my company’s VPN for the past two years without issues.

However, I recently stopped being able to connect. In my syslog, I’m now seeing these messages:

kernel: netlink: 'svpn_x86_64': attribute type 6 has an invalid length.
kernel: netlink: 'svpn_x86_64': attribute type 4 has an invalid length.

I’m not sure whether these messages were appearing before, or if they started after I upgraded from Ubuntu 24 to Ubuntu 25.

Current setup:

  • f5fpc version: 7253.2025.0725.1
  • Ubuntu 25.04

Has anyone encountered this issue, especially after upgrading to Ubuntu 25?

1 Reply

  •  This could be due to compatibility or configuration issues. A similar problem was discussed where antivirus updates affected VPN connections. Double-check your settings and any recent updates that might be causing the issue. Related Discussion