On Fri, 2014-12-12 at 17:58 +0100, Wolfgang Walter wrote:

This fixes hangs of local tcp connections over ipsec tunnels where
pmtu is lower than the mtu of the interface.

Again this is a work around, the one liner patch is not a clean patch.

Something is wrong, we should fix GSO path instead.

Why ? Because we can queue a GSO packet in a qdisc, then later call
sk_setup_caps() (too late)