Problem: On a Debian Squeeze/Ubuntu with default setup the interaction can be very slow at your Home Network. SSH Logon seems to hang seconds, Browser startup and www browsing could be slow or offer waits Background: IPv6 was implemented on newer OS, but never used at Local Networks (IPv4) cause there are no IPv6 Nameservers!!! Solution: edit with #sudo nano /etc/hosts and comment out IPv6 with # # The following lines are desirable for IPv6 capable hosts #::1 ip6-localhost ip6-loopback #fe00::0 ip6-localnet #ff00::0 ip6-mcastprefix #ff02::1 ip6-allnodes #ff02::2 ip6-allrouters then disable IPv6 on boot for the services and programs with #sudo […]
Problem: on default ubuntu lucid lynx setup ipv6 is enabled, dmesg shows boot.log= wlan0: no IPv6 routers present to speed up on a ipv4 network you should disable it. Solution: – run #sudo nano /etc/sysctl.conf add lines: #disable ipv6 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 -quit save and reboot.. -to test system open terminal and enter #dmesg -the message = wlan0: no IPv6 routers present should not be seen!