GDM uses ipv6 even when no ipv6 interfaces on system
Bug #612830 reported by
vandyswa
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gdm |
New
|
Undecided
|
Unassigned | ||
gdm (Ubuntu) |
New
|
Low
|
Unassigned |
Bug Description
Binary package hint: gdm
Bring up a fully updated Lucid Lynx Ubuntu system, with ipv6 disabled by sysctl.conf. Verify no IPv6 on interfaces with ifconfig. Look at listen list--gdm is listening on an IPv6 (wildcard) port! Log in, check your $DISPLAY. You have an IPv6 address.
Symptoms... long delays, apparently due to timeouts on IPv6 code paths. Also, apps and window managers which don't do IPv6 will not work (WMaker, for instance, apparently).
I recommend that GDM should either check interfaces and only enable address families actually present on a given system. Or at least give us a -4 switch to force its behavior.
Changed in gdm (Ubuntu): | |
importance: | Undecided → Low |
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Note this all refers to XDMCP. Sorry for not stating that explicitly.