This is an old problem. Openwrt has a patch for this. What you did also
remove replay from AP/Client, what is not required. Check this:
http://projects.qi-hardware.com/index.php/p/openwrt-xburst/source/tree/203384ef2cc5e7fa0f0fb8626c683409e3de2338/package/madwifi/patches/458-ibss_wpa_none.patch
On Tue, Oct 30, 2012 at 12:25 PM, Kees-Jan Hermans <hermans at fox-it.com>wrote:
> Hello,
>
> Madwifi can be used to have an ad-hoc crypto mode, using WPA and no key
> management. This is, as far as I know, the only way to use
> wpa_supplicant in ad-hoc mode and have some crypto. Alternatives are
> ad-mode in plain-text or no ad-hoc mode at all. However, the method
> above causes replay messages to appear (and hosts not working) when a
> third host is added to the mesh. To fix this, the patch below, I
> believe, shuts down the replay check.
>
> Sincerely,
>
> KJ
>
> diff -u -r madwifi-0.9.4-r4178-20120131/net80211/ieee80211_crypto_tkip.c
> madwifi-changes/net80211/ieee80211_crypto_tkip.c
> --- madwifi-0.9.4-r4178-20120131/net80211/ieee80211_crypto_tkip.c
> 2011-02-02 22:22:31.000000000 +0100
> +++ madwifi-changes/net80211/ieee80211_crypto_tkip.c 2012-10-30
> 11:42:19.442439586 +0100
> @@ -297,6 +297,7 @@
> tid = ((struct ieee80211_qosframe *)wh)->i_qos[0] &
> IEEE80211_QOS_TID;
>
> ctx->rx_rsc = READ_6(ivp[2], ivp[0], ivp[4], ivp[5], ivp[6],
> ivp[7]);
> +/*
> if (ctx->rx_rsc <= k->wk_keyrsc[tid]) {
> /*
> * Replay violation; notify upper layer.
> @@ -305,6 +306,7 @@
> vap->iv_stats.is_rx_tkipreplay++;
> return 0;
> }
> +*/
> /*
> * NB: We can't update the rsc in the key until MIC is verified.
> *
>
> _______________________________________________
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> HostAP at lists.shmoo.com
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>
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Douglas Gameiro Diniz
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