Preserve bridge MTU in KVM ifup script

Closes: #201 - KVM_IFUP does not set bridge-MTU on tap devices
Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>
(cherry picked from commit a1ec8695a6b453acdc2fa746a27be73c614b2e87)

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

diff --git a/tools/kvm-ifup.in b/tools/kvm-ifup.in
index 4ba17e7..2ff8ccb 100644 (file)
--- a/tools/kvm-ifup.in
+++ b/tools/kvm-ifup.in
@@ -36,6 +36,8 @@ fi
 ip link set $INTERFACE up
 
 if [ "$MODE" = "bridged" ]; then
+       ip link set $INTERFACE mtu $(</sys/class/net/${BRIDGE}/mtu)
+
        # Connect the interface to the bridge
        brctl addif $BRIDGE $INTERFACE
 else