Hi, when connecting to a VPN server with OpenConnect, the MTU on the created tun interface is too high (1418) and TCP connections are broken as soon as large packages are transmitted. The gateway operator told me that the gateway sends a MTU of 1330 which is also what the Cisco AnyConnect client sets on the cscotun0 interface. Manually setting the MTU to 1330 on OpenConnect's interface fixes all problems. I have seen that in the changelog of v4.03 it says "Fix handling of requested vs. received MTU settings.", however I do still have the problem with openconnect v4.07 (on 64-bit Arch Linux). Michael -------------- next part -------------- A non-text attachment was scrubbed... Name: helmling.vcf Type: text/x-vcard Size: 365 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/openconnect-devel/attachments/20130215/5ffb37b4/attachment.vcf>
