debian/patches/keep-bridge-MTU.patch

   1 Index: new/bin/vznetaddbr.in
   2 ===================================================================
   3 --- new.orig/bin/vznetaddbr.in  2013-10-04 09:09:45.000000000 +0200
   4 +++ new/bin/vznetaddbr.in       2013-10-04 09:21:04.000000000 +0200
   5 @@ -29,8 +29,14 @@
   6      [ -n "$bridge" ] ||
   7         bridge=vmbr0
   8
   9 +    if [ ! -f "/sys/class/net/$bridge/mtu" ]; then
  10 +       echo >&2 "bridge $bridge does not exists."
  11 +       exit 1
  12 +    fi
  13 +
  14      echo "Adding interface $host_ifname to bridge $bridge on CT0 for CT$VEID"
  15 -    ip link set dev "$host_ifname" up
  16 +    bridge_mtu=$(cat "/sys/class/net/$bridge/mtu")
  17 +    ip link set dev "$host_ifname" up mtu "$bridge_mtu"
  18      ip addr add 0.0.0.0/0 dev "$host_ifname"
  19      echo 1 >"/proc/sys/net/ipv4/conf/$host_ifname/proxy_arp"
  20      echo 1 >"/proc/sys/net/ipv4/conf/$host_ifname/forwarding"