[ZeroTier](https://zerotier.com/) is a VPN/SD-WAN that provides wide access to a virtual wide peer to peer ethernet network.
The daemon manages new interface networks under the `zt` prefix, and handle all the ip configuration under those interrfaces.
After [battling](https://github.com/zerotier/ZeroTierOne/issues/868) for a whole week figuring why the IPv6 addresses didn't show up on that interface under LibreElec, I found the issue was related to the configuration on `connman` regarding which interfaces it should manage.
This commit proposes a new network interface prefix to be included on the block list by default for new LibreElec installations, in order to avoid more people facing issues while trying to hook up their devices on the ZeroTier network.
In case krb5 package is build before libssh then libssh is build with Kerberos support. But later addons using libssh doesn't have required libraries and fail to start.
Upstream commits 20f20417 ("main: Add UseGatewaysAsTimeservers option")
and 3ce40776 ("timeserver: Use gateways as timeservers if
UseGatewaysAsTimeservers=true") change ConnMan's behaviour regarding the
use of default gateways as timeservers: this is now a configurable
option at run-time, with the default setting being to disable this
behaviour. These commits obsolete one of LibreELEC's custom patches,
connman-04-do-not-add-default-gw-as-timeserver.patch.
Prepare for the next stable release of ConnMan by cherry-picking these
commits from upstream (with minor modifications to commit 20f20417 so it
applies cleanly to 1.36) and using the new UseGatewaysAsTimeservers
option in /etc/connman/main.conf to forcefully disable the feature,
which matches the behaviour of the LibreELEC patch. The cherry-picked
upstream commits can be dropped when a new stable version of ConnMan is
released and LibreELEC upgrades to it.
