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Thanks.
I found the culprit already.
All my configs on the apache virtual host and openssl where correct but, it seems that if you connect to an Apache with multiple virtual hosts, it uses the...

Hey!

We do have - unfortunately - an application that works with TLS1.0 only.

All upgraded (18.04 and earlier) versions work fine with the "hack" to activate TLS1.0 via openssl.cnf
and apache...

Thx ... and welcome to our world - we don't have any clue too :D

nft is not installed. Yes i do have changed the mac address, because i wanted it to be the exact same
on the upgraded 20.04 ubuntu...

ok,

the dump:


root@picserv2:~# tcpdump -nntle -i ens224
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ens224, link-type EN10MB (Ethernet), capture...

I tried it with 10.31.0.2, 10.31.0.3, 10.31.0.4
These addresses are definitly working, confirmed with other machines. The 10.31.0.100 may have other problems.



IP 10.31.252.252 > 10.31.0.2:...

no luck ...


https://ubuntuforums.org/image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAy0AAAGCCAYAAADtxSwUAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAAEnQAABJ0Ad5mH3gAALMMSURBVHhe7f1PaBzJtu...

Thx!

Switched to netplan ... no difference.
Its really funny, starting the backup of the upgraded VM with 18.04 its working flawlessly....

No success with different metrics too.

Hi!

we have a very interessting thing:

We upgraded a server from 18.04 to 20.04.

The server does have 2 network interfaces:


ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500