Administrace komentářů

Dobrý den,

mám VPS s Ubuntu 10.04 a snažím se rozjet IPV6. Všechno funguje, ale bohužel jen pár minut po /etc/init.d/networking restart. To funguje ping6 ipv6.google.com a funguje i ping6 na VPS. Pak vše najednou chcípne. V logách nic není. Nastaveno to mám takto:

cat /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
	address 31.31.73.17
	netmask 255.255.255.0
	network 31.31.73.0
	broadcast 31.31.73.255
	gateway 31.31.73.1
	# dns-* options are implemented by the resolvconf package, if installed
	dns-nameservers 46.28.104.68
	#dns-search hamqth.com

iface eth0 inet6 static
	pre-up modprobe ipv6
	address 2a02:2b88:2:1::5d8:1
	netmask 64
	gateway 2a02:2b88:2:1::1

ip -6 route:

2a02:2b88:2:1::/64 dev eth0  proto kernel  metric 256  mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0  proto kernel  metric 256  mtu 1500 advmss 1440 hoplimit 4294967295
default via 2a02:2b88:2:1::1 dev eth0  metric 1  mtu 1500 advmss 1440 hoplimit 4294967295

ifconfig:

eth0      Link encap:Ethernet  HWaddr 52:54:00:00:05:d8  
          inet addr:31.31.73.17  Bcast:31.31.73.255  Mask:255.255.255.0
          inet6 addr: 2a02:2b88:2:1::5d8:1/64 Scope:Global
          inet6 addr: fe80::5054:ff:fe00:5d8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:72955976 errors:0 dropped:1031957 overruns:0 frame:0
          TX packets:10367584 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:9736847472 (9.7 GB)  TX bytes:4430692763 (4.4 GB)
          Interrupt:10 Base address:0x8000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:28583818 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28583818 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:8470664866 (8.4 GB)  TX bytes:8470664866 (8.4 GB)

tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet addr:172.16.0.1  P-t-P:172.16.0.2  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:1159313 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1399678 errors:0 dropped:99 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:152448315 (152.4 MB)  TX bytes:1252005245 (1.2 GB)

iptables:

#IPV6
ip6tables -F
ip6tables -P INPUT  DROP
ip6tables -P OUTPUT ACCEPT
ip6tables -P FORWARD DROP 

ip6tables -A INPUT -i lo -j ACCEPT
ip6tables -A INPUT -p ipv6-icmp -j ACCEPT
ip6tables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
ip6tables -A INPUT -m state --state INVALID -j DROP

ip6tables -A INPUT -p tcp --dport 80 -j ACCEPT

ip6tables -A INPUT -j REJECT --reject-with icmp6-adm-prohibited

uname -a:

Linux vm1496 2.6.32-35-server #78-Ubuntu SMP Tue Oct 11 16:26:12 UTC 2011 x86_64 GNU/Linux

Dále jsem zjistil zajímavou věc. Pokud IPV6 chcípne, nejde ani ping6 na default gateway, ale ping6 na 2a02:2b88:2:1::146:1 (další moje VPS) projde bez problémů. Pokud zkusím traceroute6 na výše uvedenou adresu, je to na jeden hop. Netuším proč. Nenapadá vás, prosím, kde by mohl být problém? Díky za váš čas.

Petr