qos: use -m state --state

[kjbracey2]

Avoid using -m conntrack --ctstate, as it's not implemented for IPv6 in kernel 2.6.22 or iptables 1.3.8. But -m state --state does exactly the same thing, and is implemented.

[kjbracey2]

This is the simple solution for making IPv6 QoS work on MIPS, rather than #7. Tested applied to base code and seems to work.

I'm still interested in #7 as a potential path to QoS improvements and aligning with upstream, but this is far less risky.

[kjbracey2]

I note that this was introduced in 92e88b8, and isn't upstream. Do you recall what the bug that was being worked around was?

[john9527]

Do you recall what the bug that was being worked around was?

At that time there was a lot of work going on across multiple distirbutions. I think it may have come as a port from Tomato.