[Bug 515315] Re: WiFi/ethernet bonding config fails to launch wpa_supplicant

[Stéphane Graber]

To avoid race conditions a config like the one below is recommended:
auto eth0
iface eth0 inet manual
    bond-master bond0

iface wlan1 inet manual
    bond-master bond0
    bond-give-a-chance 10
    wpa-bridge bond0
    wpa-ssid ASUS
    wpa-psk ****
    wpa-key-mgmt WPA-PSK
    wpa-group CCMP TKIP

auto bond0
iface bond0 inet dhcp
    bond-slaves none
    bond-mode 1
    bond-miimon 100


I still doubt this will work though as your bond is configured to use eth0 as a primary, meaning that it'll clone the mac of eth0 that will then be rejected by your wireless access point and likely confuse wpa_supplicant.

** Changed in: ifenslave-2.6 (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/515315

Title:
  WiFi/ethernet bonding config fails to launch wpa_supplicant

Status in “ifenslave-2.6” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: ifupdown

  Versions:
  Kubuntu 9.10,
  ifupdown 0.6.8ubuntu21

  I'm trying to use bonding to provide seamless failover between the
  wired and wireless interfaces. Wired>eth0 wireless>wlan1. Since
  network manager doesn't support bonding yet, I stop it (# stop
  network-manager) and (try to) manage the interfaces using ifup and
  ifdown utilities. Using the example in
  /usr/share/doc/ifenslave-2.6/examples/ethernet+wifi, I set up my
  interfaces file:

  auto lo
  iface lo inet loopback

  auto bond0
  iface bond0 inet dhcp
          bond-slaves eth0 wlan1
          bond-mode 1
          bond-miimon 100
          bond-primary eth0
  iface wlan1 inet manual
          bond-give-a-chance 10
          wpa-bridge bond0
          wpa-ssid ASUS
          wpa-psk ****
          wpa-key-mgmt WPA-PSK
          wpa-group CCMP TKIP

  My problem is that with this setup, running ifup -v bond0 shows that
  wpa_supplicant is never run, thus leaving the wireless interface down.
  Is there something I'm missing? Using the interfaces file to connect
  directly (no bonding interface) with wlan1 works fine.

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