How can I configure a GRE tunnel with IPv6 inner addresses?
Issue
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Why are IPv6 inner addresses ignored when configuring a GRE tunnel as described in article How to setup a GRE tunnel that survive reboots??
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After creating the following configuration files for a GRE tunnel IPv6 inner addresses are ignored and only IPv4 addresses are configured:
[root@rhel6tunnel1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-gre1 DEVICE=gre1 TYPE=GRE ONBOOT=yes MY_INNER_IPADDR=10.0.0.1 PEER_OUTER_IPADDR=172.16.128.2 PEER_INNER_IPADDR=10.0.0.2 BOOTPROTO=none IPV6INIT=yes IPV6ADDR=2001:db8::1/64 [root@rhel6tunnel2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-gre1 DEVICE=gre1 TYPE=GRE ONBOOT=yes MY_INNER_IPADDR=10.0.0.2 PEER_OUTER_IPADDR=172.16.128.1 PEER_INNER_IPADDR=10.0.0.1 BOOTPROTO=none IPV6INIT=yes IPV6ADDR=2001:db8::2/64
Environment
- Red Hat Enterprise Linux 6.
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