Hi, ip6_tunnel keeps a cached dst (dst_cache in ip6_tnl) per tunnel instance. This cached dst is re-used while it's not marked obsolete. A change of the tunnel's parameters (via SIOCCHGTUNNEL) does not invalidate the dst_cache directly, which results on it being used by ip6ip6_tnl_xmit after the tunnel is configured with new parameters. Shouldn't ip6ip6_tnl_change dst_release() the cached dst and leave ip6ip6_tnl_xmit to pick a new one based on the new local/remote addresses etc? I can provide a patch to fix this, meanwhile just wanted to confirm the expected behaviour.
Thanks,
Hugo
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