Package: radvd
Severity: wishlist
Tags: ipv6 upstream

Hi,

currently, radvd fails if it is started for an interface that is not
yet present or not yet up. This leads to network failures if radvd is
started on an interface that appears dynamically, such as VLAN
interface or a bridge.

In the bridge case, kernel behavior was recently changed that brX only
changes to the UP state when the first interface is added to the
bridge. The kernel developers think that it is a good idea to mimic a
phyiscal interface in that regard. In the very common virtualization
case, this means that the bridge won't be in an UP state until the
first VM is booted and attaches itself to the network. This behavior
has been verified for both Virtualbox and KVM setups.

On the netdev mailing list, I received the answer that the kernel's
new behavior is fine and that the applications should hang around and
wait for the interface to become usable. So we need to change the
applications.

Greetings
Marc

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