Keep the expired prefix for the duration of the prefix expiration event and remove it afterwards.
bd1957e sd-icmp6-nd: Add support for fetching the latest expired prefix
src/libsystemd-network/sd-icmp6-nd.c | 20 ++++++++++++++++++++
src/systemd/sd-icmp6-nd.h | 2 ++
2 files changed, 22 insertions(+)
Upstream: github.com