Am 24.07.22 um 19:46 schrieb Angel Abad:
Description: PUSH_BUNDLE_SIZE is too short
Author: Angel Abad <an...@debian.org>
---
Hello, we have problem with a large used openvpn server, our server push to
clients
almos 150 routes, we havent problem with windows clients, but with linux
clients push
options are cut, and the clients fail to configure beacouse the route commmands
are cut.
We look code and verify that push bundle size is only 1024, so push options on
linux are cut
on this size. We looked openvpn3 too, and there this limit is 2048
https://github.com/OpenVPN/openvpn3/blob/e1a35028a82acaf5ae6caeae321d83c36477d27c/openvpn/tun/linux/client/sitnl.hpp#L50
That is the buffer size of the netlink socket. That has absolutely
nothing to do with PUSH bundle size.
The maximum PUSH bundle size that OpenVPN3 will generate is also 1024:
https://github.com/OpenVPN/openvpn3/blob/master/openvpn/options/continuation_fragment.hpp#L42
Could you please increase this limit on openvpn2 or provide a configuration
option to
increase it?
There are a patches from me for master that allow adjusting control
channel max size. However, our OpenVPN 2 server code should never send a
push message that exceeds the 1024 byte limit. Increasing this size for
both client and server will break existing setups. Can you explain your
setup and how to reproduce the bug?
In the current form this patch is a NAK from me.
Arne
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