Adding '-tentative' to the ip call in /lib/ifupdown/wait-for-ll6.sh
corrects this issue for me:
--- /lib/ifupdown/wait-for-ll6.sh.old 2016-02-08 23:58:02.341820711 +0000
+++ /lib/ifupdown/wait-for-ll6.sh 2016-02-09 00:01:18.128000560 +0000
@@ -4,7 +4,7 @@
delay=${IF_LL_INTERVAL:-0.1}
for attempt in $(seq 1 $attempts); do
- lladdress=$(ip -6 -o a s dev "$IFACE" scope link)
+ lladdress=$(ip -6 -o a s dev "$IFACE" scope link -tentative)
if [ -n "$lladdress" ]; then
attempt=0
break
(-tentative is "only list addresses which are not in the process of duplicate
address detection currently")
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to ifupdown in Ubuntu.
https://bugs.launchpad.net/bugs/1543352
Title:
inet6 dhcp doesn't wait for link-local address to leave tentative -
dhclient fails to bind
Status in ifupdown package in Ubuntu:
New
Bug description:
=
Description: Ubuntu Xenial Xerus (development branch)
Release: 16.04
ifupdown:
Installed: 0.8.10ubuntu1
Candidate: 0.8.10ubuntu1
=
With an /etc/network/interfaces file containing:
auto eno16780032
iface eno16780032 inet dhcp
iface eno16780032 inet6 dhcp
On boot, ifup starts 'dhclient -6' before the link local address has
completed Duplicate Address Discovery (the address is marked
'tentative'). In turn, dhclient reports 'Can't bind to dhcp address:
Cannot assign requested address', and fails almost immediately.
It would seem that either wait-for-ll6.sh should wait for the link
local address to come up AND stop being tentative, or the dhcp method
for inet6 should call settle-dad.sh after wait-for-ll6?
This is partly a race condition, so on slower devices the dad may
complete by the time dhclient has got started, however I can regularly
reproduce this on a virtual machine.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1543352/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
