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[markus61 <1512509@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

trying to configure ppp0 via SLAAC by adding

+ipv6
ipv6 ,::3

and increasing the debug level, i find in the logs:

Nov  2 23:03:37 zotac01 pppd[3796]: cif6addr: ioctl(SIOCDIFADDR): No such address
Nov  2 23:03:37 zotac01 pppd[3796]: sif6addr: ioctl(SIOCADDRT): File exists (line 2607)
Nov  2 23:03:37 zotac01 pppd[3796]: sif6addr failed
Nov  2 23:03:37 zotac01 pppd[3796]: sent [IPV6CP TermReq id=0x2 "Interface configuration failed"]

ppp0 has two ipv6 ips, both local,
old ip remains linked
no default route is received
several IPV6CP ConfReq appear in the log not changing any parametr of the link
a further configuration of the interface via dhcp is not possible because the interface never becomes able to transmit ipv6 packages.

reads like https://bugs.debian.org/cgi-
bin/bugreport.cgi?att=0;msg=10;bug=432728

i'm using  pppd 2.4.5-5.1ubuntu2.2
source:  https://launchpad.net/ubuntu/+source/ppp/2.4.5-5.1ubuntu2.2


lsb_release -rd:
Description:	Ubuntu 14.04.3 LTS
Release:	14.04

cheers,

/markus

** Affects: ppp (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1512509

Title:
  slaac via pppoe fails with sif6addr failed

Status in ppp package in Ubuntu:
  New

Bug description:
  trying to configure ppp0 via SLAAC by adding

  +ipv6
  ipv6 ,::3

  and increasing the debug level, i find in the logs:

  Nov  2 23:03:37 zotac01 pppd[3796]: cif6addr: ioctl(SIOCDIFADDR): No such address
  Nov  2 23:03:37 zotac01 pppd[3796]: sif6addr: ioctl(SIOCADDRT): File exists (line 2607)
  Nov  2 23:03:37 zotac01 pppd[3796]: sif6addr failed
  Nov  2 23:03:37 zotac01 pppd[3796]: sent [IPV6CP TermReq id=0x2 "Interface configuration failed"]

  ppp0 has two ipv6 ips, both local,
  old ip remains linked
  no default route is received
  several IPV6CP ConfReq appear in the log not changing any parametr of the link
  a further configuration of the interface via dhcp is not possible because the interface never becomes able to transmit ipv6 packages.

  reads like https://bugs.debian.org/cgi-
  bin/bugreport.cgi?att=0;msg=10;bug=432728

  i'm using  pppd 2.4.5-5.1ubuntu2.2
  source:  https://launchpad.net/ubuntu/+source/ppp/2.4.5-5.1ubuntu2.2

  
  lsb_release -rd:
  Description:	Ubuntu 14.04.3 LTS
  Release:	14.04

  cheers,

  /markus

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