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Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
sknat
approved these changes
Jan 29, 2026
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IPv6 link‑local addresses on the uplink were not being installed in VPP because they arrived from Linux as
/64and VPP only accepts link‑local as/128. Linux typically reports link‑local asfe80::/64.vpplink.AddInterfaceAddressignores link‑local prefixes that are not/128. As a result, VPP did not get the Linux link‑local address at all (or used its own auto‑generated one), which can potentially break setups that rely on a specific link‑local address.The uplink link‑local address is now normalized to
/128and added to VPP, ensuring a valid and consistent link‑local on the VPP uplink so that IPv6 link‑local‑based routing and control‑plane behavior that rely on link-local addresses works as expected.