In Precise (12.04), Dynamic Port Forwarding (-D option) in putty doesn't work if ipv6 is disabled

[Michael Tinsay]

If I disable ipv6 by adding the following lines in /etc/sysctl.conf:

# Disable IPv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default_disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

the -D option in putty won't work anymore, even as root.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: putty 0.62-6
Uname: Linux 3.6.0-030600rc5-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Tue Sep 18 10:10:30 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcEnviron:
 LANGUAGE=en_PH:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_PH.UTF-8
 SHELL=/bin/bash
SourcePackage: putty
UpgradeStatus: No upgrade log present (probably fresh install)