Commit d26833e3d6 for frr

commit d26833e3d65208f7938fe70656f7c8c9447646da
Merge: 2d4e37f21d 7d89d62206
Author: Russ White <russ@riw.us>
Date:   Tue Oct 27 08:19:14 2026 -0400

    Merge pull request #23499 from alxrxs/isisd-ipv4-over-ipv6-nexthop

    isisd: route IPv4 over IPv6 link-local nexthops