ipv6_gateway: can't ping

Finwe

Finwe

Each time I set
Code: 
ipv6_gateway_enable="YES"
I can't ping my IPv6 address anymore. Here is my rc.conf:
Code: 
# System
hostname="myhostname"
fsck_y_enable="YES"
dumpdev="AUTO"


# Network
# -- IPv4 configuration
ifconfig_em0="inet xx.xx.xx.xx netmask 255.255.255.0 broadcast xx.xx.xx.xx"
defaultrouter="xx.xx.xx.xx"
# -- IPv6 configuration
ipv6_enable="YES"
ifconfig_em0_ipv6="ipv6 address prefixlen 128"
ipv6_static_routes="ovhgw"
ipv6_route_ovhgw="router ipv6 address -prefixlen 128 -interface em0"
ipv6_defaultrouter="router ipv6 address"
# -- NAT
gateway_enable="YES"
ipv6_gateway_enable="YES"
# -- Jails
ezjail_enable="YES"
jail_sysvipc_allow="YES"
cloned_interfaces="lo1"
ifconfig_lo1="inet 10.1.1.254 netmask 255.255.255.0"
ifconfig_lo1_ipv6="inet6 fec0::204:254 prefixlen 64"
ifconfig_lo1_alias0="10.1.1.1 netmask 255.255.255.0"
ifconfig_lo1_alias1="10.1.1.2 netmask 255.255.255.0"
ifconfig_lo1_alias2="10.1.1.3 netmask 255.255.255.0"
ifconfig_lo1_alias3="inet6 fec0::204:1 prefixlen 64"
ifconfig_lo1_alias4="inet6 fec0::204:2 prefixlen 64"
ifconfig_lo1_alias5="inet6 fec0::204:3 prefixlen 64"
# -- Firewall
pf_enable="YES"
pf_rules="/etc/pf.conf"
# -- Random Software
sshd_enable="YES"
# -- NTP
ntpdate_enable="YES"
ntpdate_hosts="213.186.33.99"
The IPv6 configuration is automatically done by my dedicated server provider and works fine if I don't set
Code: 
ipv6_gateway_enable="YES"
I've tried to remove everything except IP configuration and gateway, and I still get the same result. I've done some research but never find the same problem. Anybody got an idea why?
 
Thanks for the reply, I didn't know. Unfortunately, even if I comment this part in my rc.conf, this doesn't solve the problem.
 
Please post at least part of the IPv6 addresses and the specific error message you are receiving. A quick peek at the routing table would be nice too.
 
Here's a part of IPv6 addresses (tell me if it's not enough):
Code: 
# -- IPv6 configuration
ipv6_enable="YES"
ifconfig_em0_ipv6="x:x:x:100f::1 prefixlen 128"
ipv6_static_routes="ovhgw"
ipv6_route_ovhgw="y:y:y:10ff:ff:ff:ff:ff -prefixlen 128 -interface em0"
ipv6_defaultrouter="y:y:y:10ff:ff:ff:ff:ff"
#ip6addrctl_enable="YES"
#ip6addrctl_policy="ipv6_prefer"

The ping6's error is "operation timed out"

If I restart netif with # /etc/rc.d/netif restartI get the following warning :
Code: 
/etc/rc.d/netif: WARNING: $ipv6_enable is obsolete.  Use $ipv6_activate_all_interfaces instead.

But if I don't set 'ipv6_enable="YES"' it doesn't work at all.

Routing tables:

Code: 
Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            ipv4address        UGS         0       60    em0
ipv4address        link#1             U           0       70    em0
myhostname         link#1             UHS         0        0    lo0
localhost          link#8             UH          0        0    lo0

Internet6:
Destination        Gateway            Flags      Netif Expire
::                 localhost          UGRS        lo0
localhost          link#8             UH          lo0
::ffff:0.0.0.0     localhost          UGRS        lo0
kuro.finwe.be      link#1             UHS         lo0
x:x:x:10ff:f       00:22:4d:a6:aa:16  UHS         em0
fe80::             localhost          UGRS        lo0
fe80::%em0         link#1             U           em0
fe80::222:4dff:fea link#1             UHS         lo0
fe80::%lo0         link#8             U           lo0
fe80::1%lo0        link#8             UHS         lo0
ff01::%em0         fe80::222:4dff:fea U           em0
ff01::%lo0         localhost          U           lo0
ff02::             localhost          UGRS        lo0
ff02::%em0         fe80::222:4dff:fea U           em0
ff02::%lo0         localhost          U           lo0
 
You don't have a default gateway set for IPv6 according to your routing table.
 
That's right!

Here's my IPv6 routing table when I disable
Code: 
ipv6_gateway_enable="YES"
Code: 
Internet6:
Destination        Gateway            Flags      Netif Expire
::                 localhost          UGRS        lo0 =>
default            fe80::12bd:18ff:fe UG          em0
localhost          link#8             UH          lo0

But I don't understand why it disappears when I set this setting and why it's OK when it's not set. How can I fix that?
 
Setting gateway_enable shouldn't touch your default gateway (or any other route).

But I'm not sure what you're trying to do here:
Code: 
ipv6_static_routes="ovhgw"
ipv6_route_ovhgw="router ipv6 address -prefixlen 128 -interface em0"
ipv6_defaultrouter="router ipv6 address"
Try removing those and only set ipv6_defaultrouter:
Code: 
ipv6_defaultrouter="fe80::12bd:18ff:fe"
(Check if that's the correct link-local address for you)

I'm using an HE.net tunnelbroker and my ipv6_defaultgateway is:
Code: 
ipv6_defaultrouter="-iface gif0"
My previous ISP had native IPv6 support and all I had to do was enable rtadv on the interface:
Code: 
ifconfig_re0_ipv6="inet6 accept_rtadv"
 
I've tried your first solution. It works fine except if, again, I set the parameter (the default gateway disappears again).

The rtadv solution don't work for me.
 
With ipv6_gateway_enable set, can you try setting the default gateway by hand? Does that work?

# route add -inet6 default fe80::12bd:18ff:fe
 
I can, but ping6 still don't work. I've noticed that Flags is "UGS" instead of "UG", I don't know if it's important.

Code: 
Internet6:
Destination        Gateway            Flags      Netif Expire
::                 localhost          UGRS        lo0 =>
default            fe80::12bd:18ff:fe UGS         em0
localhost          link#8             UH          lo0
 
I've reinstalled FreeBSD and just added the IPv6 gateway parameter. I have the same problem. Anybody got an idea?
 
Do you mean ping6 IPv6 router address? If the parameter is not set, yes, otherwise, no.
 
That's just weird. Either there's something else going on or we're overlooking something simple. Turning routing on shouldn't touch any of the existing routes. Is there a firewall running on the box that might interfere?
 
I have
Code: 
if_em_load="YES"
in /boot/loader.conf. I think it is for em0, my network interface, but I don't know if it's important.
 
It's the auto-configuration from my provider. I think I'm going to reinstall my server without their configuration. Maybe they do something I don't know and it's the problem.
 
Well, I've reinstalled from an official FreeBSD disc and just added this to rc.conf:
Code: 
$ cat /etc/rc.conf
sshd_enable="YES"

ifconfig_em0="inet ipv4 netmask 255.255.255.0 broadcast ipbroadcast"
defaultrouter="ipv4 router"

ipv6_enable="YES"
ipv6_network_interfaces="auto"
ifconfig_em0_ipv6="inet6 2001:x:x:x::1 prefixlen 128"
ipv6_defaultrouter="2001:41D0:A:10ff:ff:ff:ff:ff"

gateway_enable="YES"
ipv6_gateway_enable="YES"

hostname="myhostname"
and I still have the same problem! Is it possible that the problem is hardware? Or did I need to do more configuration? Again without
Code: 
ipv6_gateway_enable="YES"
everything works fine. No firewall, no extra parameter, no custom kernel.
 
With this rc.conf:
Code: 
# IPv6 configuration
ipv6_enable="YES"
ipv6_network_interfaces="auto"
ifconfig_em0_ipv6="inet6 2001:41D0:x:x::1 prefixlen 128"
ipv6_static_routes="ovhgw defaultgw"
ipv6_route_ovhgw="2001:41D0:A:10ff:ff:ff:ff:ff -prefixlen 128 -interface em0"
ipv6_route_defaultgw="default 2001:41D0:A:10ff:ff:ff:ff:ff"
ipv6_defaultrouter="2001:41D0:A:10ff:ff:ff:ff:ff"

hostname="myhostname"

gateway_enable="YES"
ipv6_gateway_enable="YES"
I have a "good" routing table,
Code: 
Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            37.187.16.254      UGS         0      234    em0
37.187.16.0        link#1             U           0      858    em0
myhostname         link#1             UHS         0        0    lo0
localhost          link#8             UH          0        0    lo0

Internet6:
Destination        Gateway            Flags      Netif Expire
::                 localhost          UGRS        lo0 =>
default            2001:41d0:a:10ff:f UGS         em0
localhost          link#8             UH          lo0
::ffff:0.0.0.0     localhost          UGRS        lo0
myhostname         link#1             UHS         lo0
2001:41d0:a:10ff:f 00:22:4d:a6:aa:16  UHS         em0
fe80::             localhost          UGRS        lo0
fe80::%em0         link#1             U           em0
fe80::222:4dff:fea link#1             UHS         lo0
fe80::%lo0         link#8             U           lo0
fe80::1%lo0        link#8             UHS         lo0
ff01::%em0         fe80::222:4dff:fea U           em0
ff01::%lo0         localhost          U           lo0
ff02::             localhost          UGRS        lo0
ff02::%em0         fe80::222:4dff:fea U           em0
ff02::%lo0         localhost          U           lo0
but ping on IPv6 still doesn't work. If it could help, the server is a KS 2G from OVH: http://www.kimsufi.com/
 
I've deleted the parameters from rc.conf and added the sysctl in sysctl.conf.
Code: 
net.inet6.ip6.forwarding=1
net.inet.ip.forwarding=1
I can ping my IPv6 address, but, I can't use IPv6 in my jails. With this code in my pf.conf, I can:
Code: 
nat on $wan_if inet proto {tcp, udp} from $ftp_ip to any -> $wan_ip
but with this one:
Code: 
nat on $wan_if inet6 proto {tcp, udp} from $ftp_ip6 to any -> $wan_ip6
I can't.
 
My provider gave me this:
Code: 
IPv6: 2001:41d0:x:x::1/128

The auto-configuration is also with /128, so I think /128 is the correct prefix.
 
It looks weird because it's on an Ethernet interface. If it was on a point to point link like a gif(4) interface it would be just fine.
 
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