Re: [Openvpn-devel] [Openvpn-users] OpenVPN tunnel stopped working (no traffic) after upgrade to OpenVPN 2.7 (Fedora 44)

[Antonio Q. <a...@un...>]

[moving to openvpn-devel mailing list, as this is rather a 
malfunctioning than a user question]

On 13/05/2026 21:58, Piotr Dobrogost wrote:
> On Wed, May 13, 2026 at 2:37 PM Antonio Quartulli <a...@un...> wrote:
>>
>>
>> The log doesn't show anything useful.
>> While pinging 10.92.32.1, does `dmesg` report any error?
>>
> `dmesg` doesn't report anything while pinging and tcpdump shows echo
> requests being sent:
> 
> [miner@hostx ~]$ sudo tcpdump -i ovpn-sfx icmp
> dropped privs to tcpdump
> tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
> listening on ovpn-sfx, link-type RAW (Raw IP), snapshot length 262144 bytes
> 21:51:51.902208 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 1, length 64
> 21:51:52.944032 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 2, length 64
> 21:51:53.968077 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 3, length 64
> 21:51:54.992049 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 4, length 64
> 21:51:56.016050 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 5, length 64
> 21:51:57.040002 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 6, length 64
> 21:51:58.064052 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 7, length 64
> 21:51:59.088011 IP hostx > 10.92.32.1: ICMP echo request, id 30883,
> seq 8, length 64

nothing out of ordinary. This is indeed weird.
Have you tried running tcpdump on on the other end to see if pings are 
received or not? Just to understand where packets are getting stuck.

Can you also check with `ip -s link sh dev ovpn-sfx` if there are 
dropped packets?

Regards,

> 
> Regards,
> Piotr
> 
> 
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-- 
Antonio Quartulli