I've got an AirLink RV50 3G/4G router which connects to an OpenVPN server I'm managing. In the server logfile I keep seeing these two warnings: [code]Aug 26 15:54:55 cloud ovpn-server[3990]: 44.55.66.77:43198 WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1569', remote='link-mtu 1573' Aug 26 15:54:55 cloud ovpn-server[3990]: 44.55.66.77:43198 WARNING: 'mtu-dynamic' is present in remote config but missing in local config, remote='mtu-dynamic'[/code] I tried to resolve the second one by adding [code]mtu-dynamic yes[/code] to my server.conf, but then I get an error instead: [code]Aug 26 15:59:44 cloud ovpn-server[4137]: Options error: --mtu-dynamic has been replaced by --fragment Aug 26 15:59:44 cloud ovpn-server[4137]: Use --help for more information[/code] Here is a screenshot of the client configuration options relating to packet metrics: [img]http://i.imgur.com/aULHjpS.png[/img] Any suggestions what I can do to fix these?

MTU configuration mismatch

etaoin

I've got an AirLink RV50 3G/4G router which connects to an OpenVPN server I'm managing. In the server logfile I keep seeing these two warnings:

Aug 26 15:54:55 cloud ovpn-server[3990]: 44.55.66.77:43198 WARNING: 'link-mtu' is used inconsistently, local='link-mtu 1569', remote='link-mtu 1573'
Aug 26 15:54:55 cloud ovpn-server[3990]: 44.55.66.77:43198 WARNING: 'mtu-dynamic' is present in remote config but missing in local config, remote='mtu-dynamic'

I tried to resolve the second one by adding

mtu-dynamic yes

to my server.conf, but then I get an error instead:

Aug 26 15:59:44 cloud ovpn-server[4137]: Options error: --mtu-dynamic has been replaced by --fragment
Aug 26 15:59:44 cloud ovpn-server[4137]: Use --help for more information

Here is a screenshot of the client configuration options relating to packet metrics:

Any suggestions what I can do to fix these?

TinCanTech

etaoin wrotethen I get an error instead:

Code: Select all
Aug 26 15:59:44 cloud ovpn-server[4137]: Options error: --mtu-dynamic has been replaced by --fragment

again, pointing out how out of date your router is.