Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-08-01 Thread Gert Doering
Hi, On Sun, Jul 30, 2023 at 07:55:56PM +0200, Niccolò Belli wrote: > That's NOT what's happening! Somehow I can ping the server private IP with a > payload size of 1472 despite fragment not being set (tun-mtu and mssfix have > not been set either). Outside fragmentation. There's a number of MTUs

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-08-01 Thread Niccolò Belli
Il 2023-07-30 19:55 Niccolò Belli ha scritto: yet the Tiscali connection behaves weirdly: for example clients most of the times don't receive the gateway from the dhcp (certain clients like the Amazon Fire Stick never do, yet they work fine with static IP). This doesn't happen with the Iliad conn

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-31 Thread Niccolò Belli
Il 2023-07-29 19:41 tincantech ha scritto: In future, the only valid target is your server (or client). I am not interested in comparing your various network paths. Establish a well known MTU on a well known path, first. [tiscali ~]$ ping -M do -s 1432 -c 1 PUBLIC_SERVER_IP PING PUBLIC_SERVER

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-31 Thread Hans via Openvpn-users
-users@lists.sourceforge.net>> Subject: Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6 -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 --- Original Message --- On Friday, July 28th, 2023 at 14:52, Niccolò Belli wrote: > Il 2023-07-24 13:23 tincan

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-29 Thread tincantech via Openvpn-users
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 --- Original Message --- On Friday, July 28th, 2023 at 16:42, Niccolò Belli wrote: > Il 2023-07-29 18:13 tincantech ha scritto: > > > My analysis of your test data, reduces to the following comment: > > > > Personally, I do not consider

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-29 Thread Niccolò Belli
Il 2023-07-29 18:13 tincantech ha scritto: My analysis of your test data, reduces to the following comment: Personally, I do not consider Google to be a valid target to test against. The value of PMTU, or Path MTU, is really only valid between your source location and your destination locatio

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-29 Thread tincantech via Openvpn-users
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 --- Original Message --- On Friday, July 28th, 2023 at 14:52, Niccolò Belli wrote: > Il 2023-07-24 13:23 tincantech ha scritto: > > > If your PMTU is changing "on a daily basis" then you should probably > > report > > that as a fault to

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-29 Thread Niccolò Belli
Il 2023-07-24 13:23 tincantech ha scritto: If your PMTU is changing "on a daily basis" then you should probably report that as a fault to your Internet Service Provider(s). Forgot what I've written before: I've did many more tests and apparently my connection(s)' MTU is not changing but somet

Re: [Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-24 Thread tincantech via Openvpn-users
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hi, This seems to have been forgotten. --- Original Message --- On Thursday, July 20th, 2023 at 11:24, Niccolò Belli wrote: > I'm using Debian 12 Bookworm with OpenVPN 2.6.3 on the server and Arch > Linux with OpenVPN 2.6.5 [git:makepkg/

[Openvpn-users] How to determine the correct MTU/fragment value in OpenVPN 2.6

2023-07-21 Thread Niccolò Belli
I'm using Debian 12 Bookworm with OpenVPN 2.6.3 on the server and Arch Linux with OpenVPN 2.6.5 [git:makepkg/cbc9e0ce412e7b42+] on the client. This is the server config (I need a Layer 2 tunnel unfortunately): port 1194 proto udp dev tapvpn ca /etc/openvpn/server/ca.crt cert /etc/openvpn/server