I have an issue where the openwrt router is “interfering" with my windows 7 pro 
machines and advertising both a ipv6 address to them as well as setting a 1st 
or primary ip6 dns server.

The effect is that smb connections to UNC shares on the win 7 machines fail or 
drop when the openwrt machine comes on the lan. But the win 7 machine can still 
reach the internet and other machines, it’s ‘just’ samba that looses connection 
to it’s network mounted UNC shares.

I have disabled ip6 in every checkbox I can find on luci. On each interface I 
untucked the box for it to use the built-in ip6 address management. and I set 
the dhcp server ipv6 settings all to ‘disabled’ on both wan and lan (i.e. 
Router Advertisement-Service -> disabled , DHCPv6-Service -> disabled, 
NDP-Proxy -> disabled)

Can I do more on the firewall or on the kernel to disable ipv6 altogether, or 
if it can’t be disabled, can I block it ALL on the firewall?



—
Urs Rau

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