Red Hat Bugzilla – Bug 239835
sit1 tunnels aren't brought up automatically
Last modified: 2014-03-16 23:06:39 EDT
Description of problem:
The instructions in /usr/share/doc/initscripts-*/ipv6-tunnel.howto
no longer work for creating a sit1 that is brought up at boot time.
Using "ifup sit1" after boot will still work, and the tunnel is fully functional
. It is just the /etc/init.d/network script path that fails.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create ifcfg-sit1 and sysconfig/network as below
3. watch the ascii boot as it tries to bring up the interfaces.
It will fail as it hits "sit1" with an ioctl error being printed to the screen.
("no such interface" -- from memory). It will print the red "FAIL" summary.
It should print the green "OK" and bring up the interface.
Note, an "ifup sit1" will work and succeed in bringing up the tunnel as
expected. Before the ifup is run, a "service network restart" will also
fail in the bringup of sit1. After "ifup sit1" is run once the "service network
restart" will suceed.
It looks like the normal init scripts assume that sit1 exists at the time they
are run. The sit1 interface is dynamic and is created by something downstream
of the ifup script. The /etc/init.d/network script and cohorts need to be more
mellow about a "sitN" interface not existing yet.
IPV6TUNNELIPV4=208.201.XXX.XXX # XXX == redacted
Note, I just tried to configure the automatic style 6to4 type tunnel. That
also caused an initialization-time as per above. To test, remove the
ifcfg-sit1 above. Add
change /etc/sysconfig/network file above to say IPV6_DEFAULTDEV=tun6to4 instead
of sit1. Reboot. Watch error during eth0 config. Strangely one can do
an "ifdown eth0; ifup eth0" and have the ipv6 initialization work.
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sorry it's taken so long for your bug to be properly triaged and acted
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