[Bug 1305271] Re: Manual interfaces do not come up

[NODA, Kai]

I was also surprised when I found my GRE tunnels didn't come up after applying precise-updates.
It took me half an hour to find that it was due to ifupdown.
strace(8) helped me to find ifup was aborted at "ip link set dev gre1 up" without preceding "ip tunnel add gre1 ..."

 auto gre1
 iface gre1 inet manual
-    up ip tunnel add gre1 mode gre local 10.134.126.59 remote 172.16.17.4
-    up ip link set gre1 up
+    pre-up ip tunnel add gre1 mode gre local 10.134.126.59 remote 172.16.17.4
     up ip link set gre1 mtu 1400
     up ip addr add 10.202.252.253/30 dev gre1

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https://bugs.launchpad.net/bugs/1305271

Title:
  Manual interfaces do not come up

Status in “ifupdown” package in Ubuntu:
  Confirmed

Bug description:
  Ubuntu 12.04.4 LTS amd64

  After upgrading to 0.7~beta2ubuntu11, "manual" interfaces won't come
  up. Rolled back to 0.7~beta2ubuntu10 and they work.

  Interface definition in /etc/network/interfaces (one of many):

  # VLAN 3
  auto reporter1
  iface reporter1 inet manual
          up ip l s dev intpub up
          up vconfig add intpub 3
          up ip l s dev intpub.3 name reporter1
          up ip l s dev reporter1 up
          up ip a a xx.xx.xx.xx/29 dev reporter1
          up ip a a 2403:9800:xx:xx::1/64 dev reporter1
          down ip a del xx.xx.xx.xx/29 dev reporter1
          down ip l s dev reporter1 down
          down vconfig rem reporter1

  Error when running ifup reprter1:

  Device "reporter1" does not exist.

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