Adding SRU proposal for Trusty. ** Description changed:
+ [Impact] + + * In some configurations recurrent ifup/down calls are broken due to a + false-positive recursion detection. + + * In certain situations it leaves interfaces unconfigured (in this + case: WLAN interface connected to WiFi network, but dhcp fails). + + [Test Case] + + * Setup wpa-roam configuration based on what is in comment #6 + + * Wait until wpa_supplicant connects to a wifi network + + * Run ifconfig to check if the WLAN interface received dhcp info + + * Expected result: WLAN is fully configured according to dhcp settings + + * Actual result: WLAN is connected to WiFi but not configured + + [Regression Potential] + + * Fixed upstream, fix present in Xenial. + + * Debdiffs contain a backport of an upstream fix. + + [Other Info] + + * Original bug description: + The following versions of ifupdown introduced a recursion check using "IFUPDOWN_<interface>" environment variables along with a new locking mechanism for ifup (see #1337873): 0.7.47.2ubuntu4.2 (in Trusty) 0.7.54ubuntu1.1 (in Wily) 0.7.54ubuntu2 (in Xenial) This recursion check breaks the wpa-roam feature of wpasupplicant, preventing it from loading the logical interface specified by id_str after associating with an AP. Specifically, after upgrading to one of the above ifupdown versions, the '/sbin/ifup -v --force "$WPA_IFACE=$WPA_LOGICAL_IFACE"' command run by wpa_action in functions.sh fails with an "ifup: recursion detected for parent interface wlan0 in post-up phase" error. To fix the issue, functions.sh needs to run `unset "IFDOWN_$WPA_IFACE"` before calling /sbin/ifup to prevent ifup from detecting the recursion. The attached patch implements this change. ** Patch added: "trusty_ifupdown_0.7.47.2ubuntu4.4.debdiff" https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1545302/+attachment/4574279/+files/trusty_ifupdown_0.7.47.2ubuntu4.4.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1545302 Title: wpa-roam broken by fix for ifupdown #1337873 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wpa/+bug/1545302/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
