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@@ -30,13 +30,12 @@ Bugfixes
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* Fix the model name string on some NETGEAR WNDR3700v2
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* Fix 5GHz WLAN switching channels and losing connectivity when other WLANs using the same channel are detected (including other Gluon nodes...); see https://github.com/freifunk-gluon/gluon/issues/386
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* Fix DNS resolution for mesh VPN on IPv6-only WAN; see https://github.com/freifunk-gluon/gluon/issues/397
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+* gluon-mesh-batman-adv-15: update batman-adv to 2015.0 with additional bugfixes (fixes various minor bugs)
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+* gluon-mesh-batman-adv-15: fix forwarding of fragmented frames over multiple links with different MTUs
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-Known issues
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-~~~~~~~~~~~~
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-
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-* gluon-mesh-batman-adv-15: batman-adv compat 15 doesn't handle fragmentation correctly when there are multiple different MTUs involved. In particular,
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- this breaks transmission of large packets which are first fragmented for mesh-on-lan/wan and are then sent over the mesh VPN, which has an even smaller MTU.
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-
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- We hope this will be fixed in batman-adv soon, until then we can't really recommend anything but to avoid mesh-on-lan/wan with gluon-mesh-batman-adv-15.
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+ batman-adv compat 15 doesn't re-fragment frames that are fragmented already. In particular,
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+ this breaks transmission of large packets which are first fragmented for mesh-on-lan/wan and are then sent
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+ over the mesh VPN, which has an even smaller MTU. Work around this limitation by decreasing the maximum fragment
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+ size to 1280, so they can always be forwarded as long there's no link with a MTU smaller than 1280.
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See https://github.com/freifunk-gluon/gluon/issues/435
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Matthias Schiffer