Tag: ipv6

Ubuntu Debian MAJOR Bug: WIFI randomly disconnected at 100% Signal no internet

Ubuntu Debian (All Linux OS) Bug: WIFI randomly disconnected at 100% Signal no internet System : ubuntu 18.04 LTS Kernel 5.7 amd64 Router openwrt LAN/WIFI: disabled ipv6 dhcp ! Bug: Wifi lost internet connection randomly on 100% Signal beside the Gateway-Router! Problem: No Error Logs, no Kernel Messages Tested: Replaced Mini-PCI WIFI 5/6 Cards various Brands ATH9/Intel no fix!! Replaces Drivers and Power Off Powermanagement of PCI-WIFI! no fix! Solution: edit /etc/sysctl.conf insert: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 Bug Background Info: dhcp6 daemon got a expire time of IP Address but fails to renew the handshake […]

Ubuntu Lucid Lynx 10.04: Disable IPv6 (dmesg = no IPv6 routers present)

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!

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