DATAPUISTOKEMISTI

Some notes from my experiments with fetching more than one IP address from DHCP for same physical ethernet adapter. Nothing too difficult and you don't even need netns for this, few policy route settings would be enough if dhclient (and especially dhclient-script) wouldn't be so broken. For example dhclient has nasty habit of hijacking udp/68 on all network interfaces rather than only those it controls. There's also issues in some cases due routing when DHCP server is not on local LAN but behind WAN like it's in corporate and ISP networks.

I recently posted how to update Wyze Z90D7 to latest available Windows firmware. Which is far from usable. Let's see how Ubuntu works on this hardware. Actual flavour I picked is Lubuntu, but hardware support should be same for all. TL;DR: What a piece of shit this is, don't waste your time just toss it to bin already.

I recently found old decommissioned Wyse Z90D7 Windows Terminal. Old BIOS, messed up OS, etc. So exactly how do I update this thing without all those complex management systems and active Wyse support contract?

My B593s had ancient Sonera branded firmware that has DNS issues when IPv6 is active. At least IPv6 reverse queries stall causing long delays. There's some rumors going that Sonera provides updated firmware over-the-air, but I couldn't trigger update despite trying hard. Might be because I was using Elisa SIM card. Since Elisa does have fairly recent firmware available for download I thought why not use Elisa firmware instead - get IPv6 bug fixed, have correct operator settings as default and also future updates should work without extra hacks.

Clean Windows 7 install with latest Office 2013 from Office 365 and latest Skype for Business 2015 (The Application Formerly Known As Lync) also from Office 365. Problem is that "New Skype Meeting" option is missing from Outlook calendar options. There's just empty space where ribbon bar button should be.

Ericsson has manufactured probably millions of faulty 3G WWAN modules that hang after few minutes to few hours of use. There's driver and firmware updates out that may sometimes help but usually only by extending time before hang bit longer.

If you install IE 11 before enabling "Microsoft Update" feature of "Windows Update" on Windows 7 you'll be stuck with "Use your Start menu to check for updates" error message. Solution is to open IE, then hit ALT to show menus, go to Tools, Compatibility View settings and enable "Use Microsoft compatibility lists".

# Install tftpd-hpa package apt-get update apt-get -y install tftpd-hpa # Fix config file broken by default # - use correct tftpboot directory rather than random location under /var # - chroot to tftpboot # - allow uploading of files but not overwriting existing # - listen IPv4 and IPv6 instead of IPv6 only # - enable logging mv /etc/default/tftpd-hpa /etc/default/tftpd-hpa.old cat <<'__EOF__' >/etc/default/tftpd-hpa TFTP_USERNAME="tftp"  TFTP_DIRECTORY="/tftpboot"  TFTP_ADDRESS=":69" TFTP_OPTIONS="--secure --create --listen --verbose" __EOF__ # Create tftpboot directory and use proper permissions mkdir /tftpboot chmod -R 1770 /tftpboot  chown -R root:tftp /tftpboot # Restart service service tftpd-hpa restart P.S. There's config file bug causing tftpd to listen only IPv6 connections by default... https://bugs.launchpad.net/ubuntu/+source/tftp-hpa/+bug/1448500

I had to upgrade to new Smartmontools 6.4 on my Ubuntu 12.04 server as old version lacks Prolific PL2773 USB3 to SATA bridge support.