Release Notes for Alpine 3.15.0
aports
QtWebKit was removed due to lack of upstream support
qt5-qtwebkit, kdewebkit, wkhtmltopdf, and py3-pdfkit have been removed due to known vulnerabilities and lack of upstream support for qtwebkit. Other programs have been adjusted to use qt5-qtwebengine where appropriate. The most direct replacement for wkhtmltopdf is weasyprint, which is available in the Alpine Linux community repository. puppeteer and pandoc are also options, depending on your needs. See #12888 for more information.
radvd no longer enables ipv6 forwarding
The radvd init script no longer enables ipv6 forwarding. To enable ipv6 forwarding (necessary for most networks), add net.ipv6.conf.all.forwarding=1
to /etc/sysctl.conf or to a file in /etc/sysctl.d.