Can ping, but can't view webpages

[exiva]

I'm trying to create a v6 tunnel using DD-WRT v24.

I'm using this startup script

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#***************************
#Settings start here
#***************************

#basic connection settings
SERVER_IP4_ADDR="209.51.161.14"
CLIENT_IPV6_ADDR="2001:470:1f06:d9c::2"
ROUTED_64_ADDR="2001:470:1f07:d9c::/64"

#account info to auto update endpoint
USERID="39459d0852593f0558aec7e069381e8e"
PASSWD="MyPassword"
TUNNELID="91896"

#####Optional/Advanced Settings######
#logging settings (set to /dev/null for no logging)
STARTUP_SCRIPT_LOG_FILE="/tmp/ipv6.log"
CRON_STATUS_LOG_FILE="/tmp/lastHEUpdate.log"

#Generated files paths
CRON_JOB_FILE="/tmp/report.sh"
RADVD_CONFIG="/tmp/radvd.conf"

#***************************
#Settings end here
#***************************

echo "HE IPv6 Script started" >> $STARTUP_SCRIPT_LOG_FILE

insmod ipv6
sleep 10

#get a hash of the plaintext password
MD5PASSWD=`echo -n $PASSWD | md5sum | sed -e 's/  -//g'`
echo "" >> $STARTUP_SCRIPT_LOG_FILE

#cut out the "/64" if user typed it in
ROUTED_64_ADDR=`echo $ROUTED_64_ADDR|cut -f1 -d/`
SERVER_IP4_ADDR=`echo $SERVER_IP4_ADDR|cut -f1 -d/`
CLIENT_IPV6_ADDR=`echo $CLIENT_IPV6_ADDR|cut -f1 -d/`
echo "User added addresses cleaned/checked" >> $STARTUP_SCRIPT_LOG_FILE

#update HE endpoint
echo -e wget -q "\042http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&pass=$MD5PASSWD&user_id=$USERID&tunnel_id=$TUNNELID\042" -O $CRON_STATUS_LOG_FILE  >$CRON_JOB_FILE
chmod +x $CRON_JOB_FILE
echo "Cron script created, sending endpoint update request to HE" >> $STARTUP_SCRIPT_LOG_FILE
wget -q "http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&pass=$MD5PASSWD&user_id=$USERID&tunnel_id=$TUNNELID" -O $STARTUP_SCRIPT_LOG_FILE

#get wan ip for our own use
WANIP=$(ip -4 addr show dev ppp0 | awk '/inet / {print $2}' | cut -d/ -f1)
echo "External IP detected as:" $WANIP >> $STARTUP_SCRIPT_LOG_FILE
if [ -n $WANIP ]
then
echo "configuring tunnel" >> $STARTUP_SCRIPT_LOG_FILE

# The following commands are straight from HE's website
ip tunnel add he-ipv6 mode sit remote $SERVER_IP4_ADDR local $WANIP
ip link set he-ipv6 up
ip addr add $CLIENT_IPV6_ADDR/64 dev he-ipv6
ip route add ::/0 dev he-ipv6
ip -f inet6 addr
#Added this myself.
ip link set mtu 1480 dev he-ipv6
ip tunnel change he-ipv6 ttl 64
#End
TEMP_ADDR=`echo $ROUTED_64_ADDR'1'`

# These commands aren't on HE's website, but they're necessary for the tunnel to work
ip -6 addr add $TEMP_ADDR/64 dev br0
ip route add 2000::/3 dev he-ipv6

#Enable IPv6 forwarding
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding

# make sure to accept proto-41
iptables -I INPUT 2 -p ipv6 -i vlan1 -j ACCEPT

#make sure to not NAT proto-41
iptables -t nat -A POSTROUTING --proto ! 41 -o eth0 -j MASQUERADE
echo "creating radvd conf" >> $STARTUP_SCRIPT_LOG_FILE

#creating radvd.conf
echo "#generated by startup script" > $RADVD_CONFIG
echo "interface br0 {" >> $RADVD_CONFIG
echo "AdvSendAdvert on;" >> $RADVD_CONFIG
#Added these myself.
echo "MinRtrAdvInterval 3;" >> $RADVD_CONFIG
echo "MaxRtrAdvInterval 10;" >> $RADVD_CONFIG
echo "AdvHomeAgentFlag off;" >> $RADVD_CONFIG
echo "AdvLinkMTU 1480;" >> $RADVD_CONFIG
#End
echo "prefix "$ROUTED_64_ADDR"/64 {" >> $RADVD_CONFIG
echo "AdvOnLink on;" >> $RADVD_CONFIG
echo "AdvAutonomous on;" >> $RADVD_CONFIG
echo "AdvRouterAddr on;" >> $RADVD_CONFIG
echo "};" >> $RADVD_CONFIG
echo "};" >> $RADVD_CONFIG

echo "starting radvd" >> $STARTUP_SCRIPT_LOG_FILE
radvd -C $RADVD_CONFIG &
fi

and this radvd script (It's generated by the script.)

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#generated by startup script
interface br0 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
AdvHomeAgentFlag off;
AdvLinkMTU 1480;
prefix 2001:470:1f07:d9c::/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
};

I can ping hosts fine.

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travis% ping6 www.v6.facebook.com
PING6(56=40+8+8 bytes) 2001:470:1f07:d9c:21b:63ff:fea6:1edf --> 2620:0:1cfe:face:b00c::3
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=0 hlim=50 time=80.161 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=1 hlim=50 time=79.618 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=2 hlim=50 time=79.764 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=3 hlim=50 time=80.566 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=4 hlim=50 time=79.825 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=5 hlim=50 time=79.753 ms
^C
--- www.v6.facebook.com ping6 statistics ---
6 packets transmitted, 6 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 79.618/79.948/80.566/0.322 ms

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ravis% ping6 tunnelbroker.net
PING6(56=40+8+8 bytes) 2001:470:1f07:d9c:21b:63ff:fea6:1edf --> 2001:470:0:63::2
16 bytes from 2001:470:0:63::2, icmp_seq=0 hlim=58 time=79.644 ms
16 bytes from 2001:470:0:63::2, icmp_seq=1 hlim=58 time=79.370 ms
16 bytes from 2001:470:0:63::2, icmp_seq=2 hlim=58 time=79.435 ms
16 bytes from 2001:470:0:63::2, icmp_seq=3 hlim=58 time=79.524 ms
^C
--- tunnelbroker.net ping6 statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 79.370/79.493/79.644/0.103 ms

But I can't view any v6 sites in Chrome or Safari using either http://www.v6.facebook.com, http://tunnelbroker.net or their ipv6 addresses http://[2620:0:1cfe:face:b00c::3]

Any ideas?

[cholzhauer]

You say you're running RADVD, but are your hosts actually getting an IPv6 address?  Let's see the output of ipconfig /all (or ifconfig if *NIX) and a copy of your routing tables from a host that doesn't work.

[exiva]

ifconfig:

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travis% ifconfig en0
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:1b:63:a6:1e:df
inet6 fe80::21b:63ff:fea6:1edf%en0 prefixlen 64 scopeid 0x4
inet6 2001:470:1f07:d9c:21b:63ff:fea6:1edf prefixlen 64 autoconf
inet 192.168.1.116 netmask 0xffffff00 broadcast 192.168.1.255
media: autoselect (1000baseT <full-duplex,flow-control>)
status: active

routing tables

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travis% netstat -nr
Routing tables

Internet:
Destination        Gateway            Flags        Refs      Use   Netif Expire
default            192.168.1.1        UGSc           19        0     en0
127                127.0.0.1          UCS             0        0     lo0
127.0.0.1          127.0.0.1          UH              2    22424     lo0
169.254            link#4             UCS             0        0     en0
192.168.1          link#4             UCS             2        0     en0
192.168.1.1        0:16:b6:cf:54:5d   UHLWI          25       83     en0   1166
192.168.1.116      127.0.0.1          UHS             0        0     lo0
192.168.1.255      ff:ff:ff:ff:ff:ff  UHLWbI          1        9     en0

Internet6:
Destination                             Gateway                         Flags         Netif Expire
default                                 fe80::216:b6ff:fecf:545d%en0    UGSc            en0
::1                                     ::1                             UH              lo0
2001:470:1f07:d9c::/64                  link#4                          UC              en0
2001:470:1f07:d9c:21b:63ff:fea6:1edf    0:1b:63:a6:1e:df                UHL             lo0
fe80::%lo0/64                           fe80::1%lo0                     Uc              lo0
fe80::1%lo0                             link#1                          UHL             lo0
fe80::%en0/64                           link#4                          UC              en0
fe80::216:b6ff:fecf:545d%en0            0:16:b6:cf:54:5d                UHLW            en0
fe80::21b:63ff:fea6:1edf%en0            0:1b:63:a6:1e:df                UHL             lo0
fe80::%en1/64                           link#6                          UC              en1
fe80::216:b6ff:fecf:545d%en1            0:16:b6:cf:54:5d                UHLW            en1
ff01::/32                               ::1                             Um              lo0
ff02::/32                               ::1                             UmC             lo0
ff02::/32                               link#6                          UmC             en1
ff02::fb                                link#6                          UHmLW           en1

[cholzhauer]

Hmm.  Everything looks OK...I assume fe80::216:b6ff:fecf:545 is the local address of your router.

Do any of your hosts work?  Do they work if you manually assign them an address?

[exiva]

Yes, fe80::0216:b6ff:fecf:545d is the router.

I seem to get the same issue if I manually set an ip.

I've done traceroute6 and can get to sites fine using that as well, but still not using Chrome/Safari.

Code Select Expand

traceroute6 ipv6.google.com
traceroute6 to ipv6.l.google.com (2001:4860:800f::63) from 2001:470:1f07:d9c:21b:63ff:fea6:1edf, 64 hops max, 12 byte packets
1  2001:470:1f07:d9c::1  0.542 ms  0.520 ms  0.381 ms
2  exiva-1.tunnel.tserv4.nyc4.ipv6.he.net  14.443 ms  13.308 ms  13.540 ms
3  gige-g3-8.core1.nyc4.he.net  19.578 ms  9.972 ms  13.946 ms
4  2001:504:f::27  10.190 ms  12.423 ms  10.380 ms
5  2001:4860::1:0:3be  12.917 ms  12.824 ms  12.916 ms
6  2001:4860::1:0:9ff  23.791 ms  23.107 ms  22.546 ms
7  2001:4860:0:1::14f  20.872 ms  21.741 ms  31.858 ms
8  iad04s01-in-x63.1e100.net  21.127 ms  21.689 ms  23.765 ms

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travis% traceroute6 whatismyipv6.net
traceroute6 to whatismyipv6.net (2a01:4f8:62:7061::2) from 2001:470:1f07:d9c:21b:63ff:fea6:1edf, 64 hops max, 12 byte packets
1  2001:470:1f07:d9c::1  0.575 ms  0.539 ms  0.902 ms
2  exiva-1.tunnel.tserv4.nyc4.ipv6.he.net  14.140 ms  13.678 ms  13.622 ms
3  gige-g3-8.core1.nyc4.he.net  9.889 ms  9.908 ms  14.775 ms
4  10gigabitethernet1-2.core1.lon1.he.net  78.659 ms  88.659 ms  78.475 ms
5  10gigabitethernet1-1.core1.ams1.he.net  87.910 ms  88.543 ms  87.683 ms
6  amsix-gw.hetzner.de  95.578 ms  95.257 ms  95.718 ms
7  hos-bb1.juniper2.rz6.hetzner.de  98.587 ms  98.718 ms  98.528 ms
8  hos-tr3.ex3k27.rz6.hetzner.de  99.278 ms  101.601 ms  99.405 ms
9  2a01:4f8:62:7061::2  98.453 ms  98.527 ms  98.700 ms

etc.

edit: It seems like the only ipv6 site I can get a connection to in Chrome/Safari is ipv6.google.com.

[exiva]

I started fresh today and this is what I get now.

v6.sh

Code Select Expand


#***************************
#Settings start here
#***************************

#basic connection settings
SERVER_IP4_ADDR="209.51.161.14"
CLIENT_IPV6_ADDR="2001:470:1f06:d9c::2"
ROUTED_64_ADDR="2001:470:1f07:d9c::/64"

#account info to auto update endpoint
USERID="39459d0852593f0558aec7e069381e8e"
PASSWD="implyingthisismypassword"
TUNNELID="91896"

#####Optional/Advanced Settings######
#logging settings (set to /dev/null for no logging)
STARTUP_SCRIPT_LOG_FILE="/tmp/ipv6.log"

#Generated files paths
RADVD_CONFIG="/tmp/radvd.conf"

#***************************
#Settings end here
#***************************

echo "HE IPv6 Script started" > $STARTUP_SCRIPT_LOG_FILE

insmod ipv6
sleep 10

#cut out the "/64" if user typed it in
ROUTED_64_ADDR=`echo $ROUTED_64_ADDR|cut -f1 -d/`
SERVER_IP4_ADDR=`echo $SERVER_IP4_ADDR|cut -f1 -d/`
CLIENT_IPV6_ADDR=`echo $CLIENT_IPV6_ADDR|cut -f1 -d/`
echo "User added addresses cleaned/checked" >> $STARTUP_SCRIPT_LOG_FILE

#update HE endpoint
echo "Sending endpoint update request to HE" >> $STARTUP_SCRIPT_LOG_FILE
wget -q "http://ipv4.tunnelbroker.net/ipv4_end.php?ipv4b=AUTO&pass=$PASSWD&user_id=$USERID&tunnel_id=$TUNNELID"

#get wan ip for our own use
WANIP=$(ip -4 addr show dev ppp0 | awk '/inet / {print $2}' | cut -d/ -f1)
echo "External IP detected as:" $WANIP >> $STARTUP_SCRIPT_LOG_FILE
if [ -n $WANIP ]
then
echo "Got a WAN IP... Configuring tunnel" >> $STARTUP_SCRIPT_LOG_FILE

# The following commands are straight from HE's website
ip tunnel add he-ipv6 mode sit remote $SERVER_IP4_ADDR local $WANIP
ip link set he-ipv6 up
ip addr add $CLIENT_IPV6_ADDR/64 dev he-ipv6
ip route add ::/0 dev he-ipv6
ip -f inet6 addr
#Added this myself.
ip link set mtu 1480 dev he-ipv6
ip tunnel change he-ipv6 ttl 64
#End
TEMP_ADDR=`echo $ROUTED_64_ADDR'1'`

# These commands aren't on HE's website, but they're necessary for the tunnel to work
ip -6 addr add $TEMP_ADDR/64 dev br0
ip route add 2000::/3 dev he-ipv6

#Enable IPv6 forwarding
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding

# make sure to accept proto-41
iptables -I INPUT 2 -p ipv6 -i vlan1 -j ACCEPT

#make sure to not NAT proto-41
iptables -t nat -A POSTROUTING --proto ! 41 -o eth0 -j MASQUERADE
echo "creating radvd conf" >> $STARTUP_SCRIPT_LOG_FILE

#Set this in the config panel instead. No need to generate.
# #creating radvd.conf
# echo "#generated by startup script" > $RADVD_CONFIG
# echo "interface br0 {" >> $RADVD_CONFIG
# echo "AdvSendAdvert on;" >> $RADVD_CONFIG
# #Added these myself.
# echo "MinRtrAdvInterval 3;" >> $RADVD_CONFIG
# echo "MaxRtrAdvInterval 10;" >> $RADVD_CONFIG
# echo "AdvHomeAgentFlag off;" >> $RADVD_CONFIG
# echo "AdvLinkMTU 1480;" >> $RADVD_CONFIG
# #End
# echo "prefix "$ROUTED_64_ADDR"/64 {" >> $RADVD_CONFIG
# echo "AdvOnLink on;" >> $RADVD_CONFIG
# echo "AdvAutonomous on;" >> $RADVD_CONFIG
# echo "AdvRouterAddr on;" >> $RADVD_CONFIG
# echo "};" >> $RADVD_CONFIG
# echo "};" >> $RADVD_CONFIG

echo "starting radvd" >> $STARTUP_SCRIPT_LOG_FILE
radvd -C $RADVD_CONFIG &
fi

My Router:

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root@Symphonika:~# sh v6.sh
1: lo: <LOOPBACK,MULTICAST,UP>
    inet6 ::1/128 scope host
3: eth0: <BROADCAST,MULTICAST,PROMISC,UP>
    inet6 fe80::216:b6ff:fecf:545d/64 scope link
4: eth1: <BROADCAST,MULTICAST,PROMISC,UP>
    inet6 fe80::216:b6ff:fecf:545f/64 scope link
5: vlan0: <BROADCAST,MULTICAST,PROMISC,UP>
    inet6 fe80::216:b6ff:fecf:545d/64 scope link
6: vlan1: <BROADCAST,MULTICAST,UP>
    inet6 fe80::216:b6ff:fecf:545e/64 scope link
7: br0: <BROADCAST,MULTICAST,UP>
    inet6 fe80::216:b6ff:fecf:545d/64 scope link
11: he-ipv6: <POINTOPOINT,NOARP,UP>
    inet6 2001:470:1f06:d9c::2/64 scope global
    inet6 fe80::60f6:9b5e/128 scope link

Code Select Expand

root@Symphonika:~# cat /tmp/ipv6.log
HE IPv6 Script started
User added addresses cleaned/checked
Sending endpoint update request to HE
That IPv4 endpoint is already in use.
External IP detected as: 96.246.155.94
Got a WAN IP... Configuring tunnel
creating radvd conf
starting radvd

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root@Symphonika:~# cat /tmp/radvd.conf
#generated by startup script
interface br0 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
AdvHomeAgentFlag off;
AdvLinkMTU 1480;
prefix 2001:470:1f07:d9c::/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
};

Code Select Expand

root@Symphonika:~# ifconfig
br0       Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5D 
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5950 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4942 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1539822 (1.4 MiB)  TX bytes:2446787 (2.3 MiB)

br0:0     Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5D 
          inet addr:169.254.255.1  Bcast:169.254.255.255  Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

eth0      Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5D 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10406 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9733 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:4092208 (3.9 MiB)  TX bytes:3851333 (3.6 MiB)
          Interrupt:4

eth1      Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5F 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:6709
          TX packets:0 errors:70 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:2 Base address:0x5000

he-ipv6   Link encap:UNSPEC  HWaddr 60-F6-9B-5E-00-00-00-00-00-00-00-00-00-00-00-00 
          UP POINTOPOINT RUNNING NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING MULTICAST  MTU:16436  Metric:1
          RX packets:5 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:364 (364.0 B)  TX bytes:364 (364.0 B)

ppp0      Link encap:Point-to-Point Protocol 
          inet addr:96.246.155.94  P-t-P:10.32.63.131  Mask:255.255.255.255
          UP POINTOPOINT RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:4437 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4683 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:2286609 (2.1 MiB)  TX bytes:1216198 (1.1 MiB)

vlan0     Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5D 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5879 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4947 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1560585 (1.4 MiB)  TX bytes:2466985 (2.3 MiB)

vlan1     Link encap:Ethernet  HWaddr 00:16:B6:CF:54:5E 
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4535 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4786 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2344825 (2.2 MiB)  TX bytes:1341782 (1.2 MiB)

root@Symphonika:~#

Now moving to my Mac.

Code Select Expand

travis% ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:1b:63:a6:1e:df
inet 192.168.1.116 netmask 0xffffff00 broadcast 192.168.1.255
inet6 fe80::21b:63ff:fea6:1edf%en0 prefixlen 64 scopeid 0x4
inet6 2001:470:1f07:d9c:21b:63ff:fea6:1edf prefixlen 64 autoconf
media: autoselect (1000baseT <full-duplex,flow-control>)
status: active
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
lladdr 00:1d:4f:ff:fe:69:30:b4
media: autoselect <full-duplex>
status: inactive
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:1c:b3:be:7c:0d
media: autoselect (<unknown type>)
status: inactive

Code Select Expand

travis% ping6 www.v6.facebook.com
PING6(56=40+8+8 bytes) 2001:470:1f07:d9c:21b:63ff:fea6:1edf --> 2620:0:1cfe:face:b00c::3
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=0 hlim=50 time=105.301 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=1 hlim=50 time=103.507 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=2 hlim=50 time=103.246 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=3 hlim=50 time=103.381 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=4 hlim=50 time=103.669 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=5 hlim=50 time=103.771 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=6 hlim=50 time=103.931 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=7 hlim=50 time=103.342 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=8 hlim=50 time=103.743 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=9 hlim=50 time=103.587 ms
16 bytes from 2620:0:1cfe:face:b00c::3, icmp_seq=10 hlim=50 time=103.461 ms
^C
--- www.v6.facebook.com ping6 statistics ---
11 packets transmitted, 11 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 103.246/103.722/105.301/0.536 ms

Seems like it works. Until I load safari, and try to view (for example) www.v6.facebook.com and it goes nowhere.

So I ran http://test-ipv6.com and got this result





And then, just because... my Mac's Network config pane.


Still not sure how to fix the issue though. ???

[rwg]

ppp0      Link encap:Point-to-Point Protocol 
          inet addr:96.246.155.94  P-t-P:10.32.63.131  Mask:255.255.255.255
          UP POINTOPOINT RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:4437 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4683 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:2286609 (2.1 MiB)  TX bytes:1216198 (1.1 MiB)

You're using PPPoE to connect to your ISP?  You'll need to drop the MTU of your tunnel interface from 1480 bytes to 1472 bytes.

In short, change this line in v6.sh...

ip link set mtu 1480 dev he-ipv6

...to...

ip link set mtu 1472 dev he-ipv6

...and then change your radvd.conf so the MTU it advertises is 1500 bytes.  (If it still doesn't work, try dropping radvd.conf's MTU to 1472 bytes.  If that fixes it, you're blocking ICMPv6 somewhere you shouldn't be, which is making path MTU discovery fail.)

[exiva]

ppp0      Link encap:Point-to-Point Protocol 
          inet addr:96.246.155.94  P-t-P:10.32.63.131  Mask:255.255.255.255
          UP POINTOPOINT RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:4437 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4683 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:2286609 (2.1 MiB)  TX bytes:1216198 (1.1 MiB)

You're using PPPoE to connect to your ISP?  You'll need to drop the MTU of your tunnel interface from 1480 bytes to 1472 bytes.

In short, change this line in v6.sh...

ip link set mtu 1480 dev he-ipv6

...to...

ip link set mtu 1472 dev he-ipv6

...and then change your radvd.conf so the MTU it advertises is 1500 bytes.  (If it still doesn't work, try dropping radvd.conf's MTU to 1472 bytes.  If that fixes it, you're blocking ICMPv6 somewhere you shouldn't be, which is making path MTU discovery fail.)

You're a gentleman and a scholar! Thanks for the tip.