On 2016-09-13, Harald Dunkel <harald.dun...@aixigo.de> wrote: > Hi folks, > > I am using an openbsd (5.9) box as gateway/firewall to the > internet. ISP is Deutsche Telekom. In between is a Vigor 130 > VDSL2 modem, configured to PPPoE passthrough. The PPPoE > connection is initiated on the openbsd box. > > Problem: https via the tunnel gets stuck for some sites, e.g. > https://telekom.de/ (please note the irony). Other sites work > fine, e.g. https://kundencenter.telekom.de/. I tried a lot of > clients: chrome, firefox, Safari, wget, etc. and all platforms > I have at home. > > Other services (http, smtp, dns, ntp, vnc, ...) seem to work > flawless. > > The problem came up with the migration from ADSL to VDSL this > weekend. The gateway wasn't changed, but I wonder if there are > some issues or pitfalls with PPPoE and fragmented packages or > whatever, possibly breaking https negotiation? > > > Every helpful comment is highly appreciated > Harri > >
See "MTU/MSS ISSUES" in pppoe(4).
