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Author Topic: must ping comp with tunnel before connecting from others  (Read 7568 times)

deathdonut

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must ping comp with tunnel before connecting from others
« on: July 13, 2008, 06:37:42 PM »

My tunnel is set up and working using /etc/network/interfaces under debian. I also have radvd running, and forwarding enabled. On any other computer in the network though, I can only connect to an ipv6 site like ipv6.google.com after i have pinged the computer with the tunnel connection. ideas?
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broquea

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Re: must ping comp with tunnel before connecting from others
« Reply #1 on: July 16, 2008, 01:09:23 PM »

Probably need some sort of keepalive. Try using an IPv6 available NTP server, it will constantly check to update time, and keep activity going over IPv6.
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deathdonut

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Re: must ping comp with tunnel before connecting from others
« Reply #2 on: July 16, 2008, 01:25:38 PM »

the tunnel itself stays up - from the gateway machine it works fine - just from others it doesnt. I have taken to having a console open with ping6 -i 5 open when using ipv6, but its quite annoying.
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broquea

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Re: must ping comp with tunnel before connecting from others
« Reply #3 on: July 16, 2008, 01:37:01 PM »

the tunnel itself stays up - from the gateway machine it works fine - just from others it doesnt. I have taken to having a console open with ping6 -i 5 open when using ipv6, but its quite annoying.

Yes, I figured you meant the machine behind the gateway. On that LAN client, have it use NTP as the keepalive rather than a window running a ping. Same effect, less annoying, and your time stays synched :D I can't think of any off the top of my head, but Google will probably know what is local to you.

We'll be working on updating our NTP devices to be dual-stack, and will let folks know when that is complete so they can use them.
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elventear

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Re: must ping comp with tunnel before connecting from others
« Reply #4 on: May 20, 2009, 07:12:11 AM »

I am having the same issue. Is this problem related to the tunnel itself? Or the routing table? Is there any other ways to solve this besides having this work around?
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piojan

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Re: must ping comp with tunnel before connecting from others
« Reply #5 on: May 21, 2009, 09:40:49 AM »

Code: [Select]
C:\Documents and Settings\pj>ntpq -6 -pcrv ipv6.bema.one.pl
Temporary failure in name resolution

I use ntpd from Meinberg for Windows and probably it is not fully ipv6 ready.
On a linux box I dosn't have any ntpd ipv6 problem.
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CyberLine

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Re: must ping comp with tunnel before connecting from others
« Reply #6 on: May 25, 2009, 01:11:44 PM »

Same Problem here. From the Tunnel host i have permanent ipv6 connection but on any client i need to ping the nexthop ip every 5 seconds or using ntp to be staying online with v6.
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CyberLine

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Re: must ping comp with tunnel before connecting from others
« Reply #7 on: May 26, 2009, 11:13:11 PM »

It is working for me now without Pinging.

I use the routed /64 net on the Internal side of my Router with radvd and every client gets an IP from it and could ping, surf or whatever with this.
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