Dear Maintainer,

   * What led up to the situation? i disabled ipv6 networking in /etc/sysctl.conf, and since then dhcp ip renewal fails with error relater to RFC-3442
   * What exactly did you do (or not do) that was effective (or
     ineffective)? Disable ipv6 networking
   * What was the outcome of this action? dhcp ip renewal fails with error relater to RFC-3442; lost of networking
   * What outcome did you expect instead?  well.. networking to work.. :-)

Longer desciption:
unsetting ipv6 (/etc/sysctl.conf -> net.ipv6.conf.all.disable_ipv6 = 0 net.ipv6.conf.default.disable_ipv6 = 0 net.ipv6.conf.lo.disable_ipv6 = 0) generates dhcp 3442 non zero exit error.
Disabling 3442 (dhclient.conf, removing request rfc3442-classless-static-routes) raises RTNETLINK answers: Permission denied

Sorry,typo:

unsetting ipv6 (/etc/sysctl.conf -> net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = d  net.ipv6.conf.lo.disable_ipv6 = 1)

Sorry,typo:

unsetting ipv6 (/etc/sysctl.conf -> net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = d  net.ipv6.conf.lo.disable_ipv6 = 1)

Dear submitter,

as the package isc-dhcp has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1143544

The version of this package that was in Debian prior to this removal
can still be found using https://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Thorsten Alteholz (the ftpmaster behind the curtain)