On Mon, May 9, 2016 at 3:44 PM, Alexander Duyck <alexander.du...@gmail.com> wrote: > On Mon, May 9, 2016 at 3:28 PM, Tom Herbert <t...@herbertland.com> wrote: >> In ip6gre_tnl_link_config set t->tun_len and t->hlen correctly for the >> configuration. For hard_header_len and mtu calculation include >> IPv6 header and encapsulation overhead. >> >> In ip6gre_tunnel_init_common set t->tun_len and t->hlen correctly for >> the configuration. Revert to setting hard_header_len instead of >> needed_headroom. >> >> Tested: >> >> ./ip link add name tun8 type ip6gretap remote \ >> 2401:db00:20:911a:face:0:27:0 local \ >> 2401:db00:20:911a:face:0:25:0 ttl 225 >> >> Gives MTU of 1434. That is equal to 1500 - 40 - 14 - 4 - 8. >> >> ./ip link add name tun8 type ip6gretap remote \ >> 2401:db00:20:911a:face:0:27:0 local \ >> 2401:db00:20:911a:face:0:25:0 ttl 225 okey 123 >> >> Gives MTU of 1430. That is equal to 1500 - 40 - 14 - 4 - 8 - 4. >> >> Signed-off-by: Tom Herbert <t...@herbertland.com> > > So this gives me the correct result now. However we still need patch > 3 / 11 from the set you submitted next week in order to be able to > even transmit because the flags are otherwise mangled. > > Tested-by: Alexander Duyck <adu...@mirantis.com>
Okay, I'll repost the flags patch as a standalone. Do you have any other issues then in this path? Tom
