topic Re: GNS3 - VPN not working in Firewall and Security Management

GNS3 - VPN not working

CheckPointerXL — Thu, 23 Oct 2025 21:50:52 GMT

Hi all,

in my lab environment i'm facing a strange issue where VPN do not start negotiation.

Tcpdump show no attempt and from log into vpnd and iked i got same message:

I got a pid process from both iked and vpnd, but it seems they are in stuck

i rebuild the vm from scratch but no luck, more ram, more cpu, more disk space...same story

R81.20 version

Any idea?

the_rock — Thu, 23 Oct 2025 22:38:06 GMT

Silly ?, but dows enabled_blades show vpn on?

PhoneBoy — Fri, 24 Oct 2025 01:38:58 GMT

That error message is talking about a lack of IPv6.
Without more details about the configuration/topology, we're going to have a hard time helping.

the_rock — Fri, 24 Oct 2025 15:55:42 GMT

Good catch!

CheckPointerXL — Fri, 24 Oct 2025 16:01:32 GMT

thank you for the info

anyway just fixed, a routing issue did not trigged ike packests...

the_rock — Fri, 24 Oct 2025 16:31:22 GMT

Good job!