Arch Linux

Koven

Member

Registered: 2006-06-13

Posts: 154

MTU problem with vpnc and Virtualbox [SOLVED]

Hi

I've a problem connecting with vpnc to a vpn environment from a VM in Virtualbox. I found that the problem is this

https://www.virtualbox.org/ticket/13847

So setting MTU to 1500 solves the problem but I don't know what is changing again to 1280, so I tried creating a service with somethig I found in the wiki section

https://wiki.archlinux.org/index.php/Jumbo_frames

Setting MTU for wl3ps0 interface in 1500 value but when I'm checking again I see this, after starting setmtu.service.

% ip l sh
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp0s25: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
    link/ether 3c:97:0e:7a:ad:9a brd ff:ff:ff:ff:ff:ff
3: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1280 qdisc mq state UP mode DORMANT group default qlen 1000
    link/ether 84:3a:4b:5f:a8:d4 brd ff:ff:ff:ff:ff:ff

Any idea to solve this? I don't think scheduling a cron job is necessary. I need to set this MTU parameter in 1500 but is changing all the time.

BR

Edit: I don't know what happened next but I'm not getting that error again, so I think all the things I did solved my problem in some way.

Last edited by Koven (2015-07-22 17:08:45)