Communication between two Network Interfaces (with IPv6 addresses) within same system

peeyushpd · 03-17-2012, 02:48 PM

I have two interfaces,
eth0 and wlan0, both having default IPv6 addresses.

I am pinging to wlan0 address from another ubuntu machine connected to eth0.
I am receiving ICMPv6 packets on eth0, but not able to forward it on wlan0.

I have set below ip6tables FORWARD policy on my machine with source as eth0 IPv6 address and destination as wlan0 IPv6 address. But the packets are not getting forwarded to wlan0.

ip6tables -A FORWARD -o wlan0 -i eth0 -d fe80::be77:37ff:fe59:c6e4 -s fe80::1a03:73ff:fe53:e5c4 -j ACCEPT

Can anyone help on the issue. For IPv4 addresses it is working, but not for IPv6 addresses.

Thanks,
Peeyush

Celyr · 03-18-2012, 07:51 AM

What about

Code:

cat /proc/sys/net/ipv6/conf/all/forwarding

If it's 0 put it to 1 with

Code:

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding

Hope it helps

peeyushpd · 03-18-2012, 02:04 PM

Quote:

Originally Posted by Celyr

What about

Code:

cat /proc/sys/net/ipv6/conf/all/forwarding

If it's 0 put it to 1 with

Code:

echo 1 > /proc/sys/net/ipv6/conf/all/forwarding

Hope it helps

Thanks Celyr,
But I have already set ipv4 and ipv6 forwarding to 1.
Hope I have done the configuration correctly.

Thanks,
Peeyush