Is there a known problem running ah+esp on ip6?  I can set up an
association and run ah+esp just fine on ip4,
and ah or esp work well by themselves in ip6, but I've had no luck
with combining them on ip6.

I know that ipcomp is documented to be broken but I haven't seen
anything about this problem.  This is on 7.0-RELEASE.

For example this:

    spdadd hostA hostB any -P out ipsec
        esp/transport//require ah/transport//require;
    spdadd hostB hostA any -P in ipsec
        esp/transport//require ah/transport//require;

results in no exchange but the following messages in syslog:

    snowfall kernel: ip6_output (ipsec): error code 22

Taking either ah or esp out of the policy works just fine.
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