I'm running a Debian Jessie ARM system whose hardware I recently upgraded. This allowed me to upgrade the kernel to the standard Jessie kernel and switch to systemd. However I am having a few issues with getting radvd to start on boot.
Ther kernel is: linux-image-3.16.0-4-armmp-lpae 3.16.7-ckt20-1+deb8u2 Which has CONFIG_IPV6=y meaning the various IPV6 sysctls should be available as soon as the /proc filesystem is mounted. /etc/sysctl.d/ contains only 99-sysctl.conf which is a symlink pointing to /etc/sysctl.conf which contains the following uncommented lines: net.ipv4.ip_forward=1 net.ipv6.conf.default.forwarding=1 net.ipv6.conf.all.forwarding=1 net.ipv6.conf.ppp0.accept_ra=2 However on boot net.ipv6.conf.all.forwarding is set to 0 Running systemctl start systemd-sysctl by hand does not change this but running sysctl -p does. To me it looks like systemd is not updating the sysctls either at boot or when explicitly instructed to do so. However even if I run sysctl -p and update the above sysctls I still cannot start radvd via systemctl. Journalctl -u radvd complains: Jan 08 14:52:40 stylite radvd[1436]: Starting radvd: Jan 08 14:52:40 stylite radvd[1436]: * IPv6 forwarding seems to be disabled. Jan 08 14:52:40 stylite radvd[1436]: * See /usr/share/doc/radvd/README.Debian Jan 08 14:52:40 stylite radvd[1436]: * radvd will *not* be started. This message appears to come from /etc/init.d/radvd which checks if /proc/sys/net/ipv6/conf/all/forwarding is present and contains the value 1 which it does. Running the above init script by hand (/bin/sh -x /etc/init.d/radvd start )does i not appear to execute the relevant code though instead an included file causes it to try to start radvd via systemctl (makes sense on a systemd based system I guess). AFACT the only way I can get radvd to start reliably is to either run the radvd binary by hand or run systemctl stop radvd sysctl -p systemctl start radvd Despite radvd not being running in the first place. I thought this might be something to do with socket activation but clients on the network don't seem to pick up an IPV6 address/route until radvd is kicked in this manner. Any help with getting the sysctls applied at boot and radvd started and serving addresses/routes would be appreciated. Thanks in advance William
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