Re: [Libguestfs] [PATCH] appliance: Disable ipv6 in the appliance because qemu usernet is ipv4 only
On Thu, Jan 23, 2014 at 11:44:52PM +0100, Olaf Hering wrote:
Signed-off-by: Olaf Hering <olaf(a)aepfle.de>
---
Untested in this environment.
appliance/init | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/appliance/init b/appliance/init
index b25ea26..cc8c978 100755
--- a/appliance/init
+++ b/appliance/init
@@ -71,6 +71,10 @@ for f in /sys/block/{h,s,ub,v}d*/queue/scheduler; do echo noop >
$f; done
# Update the system clock.
hwclock -u -s
+# Disable ipv6 because host names resolve to ipv4 and ipv6
+# Resolver may prefer ipv6 and qemu usernet does only ipv4
+for f in /proc/sys/net/ipv6/conf/*/disable_ipv6; do if test -w $f ; then echo 1 > $f;
fi; done
There's no error checking in init, so this should work:
for f in /proc/sys/net/ipv6/conf/*/disable_ipv6; do echo 1 > $f; done
However I don't understand why disabling IPv6 should be necessary. If
sites resolve to AAAA+A records, then presumably it's going to choose
the A (IPv4) route since no IPv6 route exists. If a site resolves to
only an AAAA record, then it's not reachable whatever we do.
Rich.
--
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