ipv6

DD-WRT config:

insmod /lib/modules/`uname -r`/kernel/net/ipv6/sit.ko
sleep 5
HOST6RD=$(nslookup 6rd.comcast.net |grep "Address"|awk '{ print $3 }'|grep -v 192.168.1.1 -m1)
WANIP=$(ip -4 addr show dev vlan2 | grep 'inet ' | awk '{print $2}' | cut -d/ -f1)
if [ -n "$WANIP" ]
then
V6PREFIX=$(printf ' 2001:55c:%02x%02x:%02x%02x' $(echo $WANIP | tr . ' '))
ip tunnel add tun6rd mode sit ttl 255 remote any local $WANIP
ip link set tun6rd mtu 1280
ip link set tun6rd up
ip addr add $V6PREFIX:0::1/32 dev tun6rd
ip addr add $V6PREFIX:1::1/64 dev br0
ip -6 route add 2000::/3 via ::$HOST6RD dev tun6rd
kill -HUP $(cat /var/run/radvd.pid)
fi
echo "interface br0 { MinRtrAdvInterval 3; MaxRtrAdvInterval 10; AdvLinkMTU 1280; AdvSendAdvert on; \
prefix $V6PREFIX::/64 { AdvOnLink on; AdvAutonomous on; AdvValidLifetime 86400; AdvPreferredLifetime 86400; }; };" \
> /tmp/radvd.conf
radvd -C /tmp/radvd.conf start 

Test ping:

C:\Program Files\cFosSpeed>tracert ipv6.google.com

Tracing route to ipv6.l.google.com [2001:4860:8003::63]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  **** (hidden)
  2    40 ms    34 ms    44 ms  2001:55c:45fc:5042::1
  3    35 ms    34 ms    36 ms  2001:558:d0:1e::1
  4    35 ms    34 ms    33 ms  2001:558:d0:b::1
  5    35 ms    36 ms    34 ms  2001:558:d0:1::1
  6    38 ms    37 ms    34 ms  2001:558:0:f6c5::1
  7    49 ms    51 ms    49 ms  pos-0-2-0-0-cr01.santateresa.tx.ibone.comcast.ne
t [2001:558:0:f5aa::2]
  8   109 ms    68 ms    76 ms  pos-0-5-0-0-cr01.losangeles.ca.ibone.comcast.net
 [2001:558:0:f583::1]
  9    83 ms    80 ms    83 ms  ix-4-0-0.547.mcore5.LAA-LosAngeles.ipv6.as6453.n
et [2001:5a0:100:500::d]
 10    90 ms    80 ms    83 ms  2001:5a0:fff0::2
 11    77 ms    80 ms    83 ms  if-1-0-0.977.mcore5.LAA-LosAngeles.ipv6.as6453.n
et [2001:5a0:fff0:100::2]
 12    78 ms     *       86 ms  if-5-0-0.902.core2.DTX-Dallas.ipv6.as6453.net [2
001:5a0:100:500::11]
 13   123 ms   113 ms   113 ms  if-6-0-0.1275.core2.MLN-Miami.ipv6.as6453.net [2
001:5a0:2e00:100::16]
 14     *      135 ms   115 ms  2001:478:124::133
 15   116 ms   116 ms   120 ms  2001:4860::1:0:245c
 16   130 ms   134 ms   143 ms  2001:4860::1:0:489
 17   139 ms   147 ms   132 ms  2001:4860::2:0:608
 18   136 ms   140 ms   147 ms  2001:4860:0:1::105
 19   130 ms   135 ms   131 ms  gy-in-x63.1e100.net [2001:4860:8003::63]