Create additional 6in4 tunnels manually?

[ml70]

I have a 6in4 tunnel running already (configured at RT-AC66U), but would like to add another tunnel broker, to route into their own /32 only. I still want to use existing tunnel1 for LAN's SLAAC, the new tunnel2 would only be for routing traffic directly into tunnel2 provider's /32 .

And how to make sure traffic is not routed between my tunnels 1 and 2?

 

[ml70]

To answer my own question, should it help anyone else,

# tunnel_name_here will become the device name on your router
ip tunnel add tunnel_name_here mode sit ttl 64 remote tunnel_ipv4_here local `nvram get wan0_ipaddr`
# mtu as per your tunnel provider's specs
ip link set dev tunnel_name_here mtu 1400 up
# replace with your ipv6 endpoint address/size
ip addr add 2000:0123:abc:def::2/64 dev tunnel_name_here
# Will it be the default route for all ipv6 traffic? If yes,
ip -6 route add default dev tunnel_name_here metric 1
# OR, will it just be for that ipv6 network? If size of whole network is /32,
ip -6 route add 2000:0123::/32 dev tunnel_name_here metric 1

Not totally sure about the routing part but it does work, corrections welcome.