On the power kernel (v46), IPv6 does not work on some wireless networks  - it works for about 10 seconds, and then all
IPv6 connectivity ceases, as the kernel is rejecting neighbour advertisements.

I traced this back to an issue with the wl12xx driver. When receiving packets, the driver rounds up the packet size
to a multiple of the word size. It then adjusts skb->len to remove the alignment bytes. However it forgets to adjust
skb->tail which needs to match.

In my case, the IPv6 neighbour advertisement parsing code was looking at skb->tail, and discarding packets due to
the trailing padding bytes.

The attached patch fixes this issue by using skb_trim() to resize the skb correctly. It fixes my IPv6 issues on the
power kernel, and has not affected any other usage.

Maybe this is related to the other wireless issues people are having also?

Date: 2011-08-11 14:44
Sender: Pali Rohár

Patch from https://garage.maemo.org/tracker/index.php?func=detail
&aid=6785&group_id=1528&atid=5523 is included in
kernel-power.

Date: 2011-02-26 22:40
Sender: Luke Dashjr

Confirmed this fixes IPv6.