c6ccd7ce6e
43537eb9c3 circumvented an upstream patch which caused an IPv6
pool regression. This patch, discussed in
https://bugs.ntp.org/show_bug.cgi?id=3958, addresses another
unworkable combination of link-local local address with
non-link-local server.
Obtained from: src c1767cf87cb6
MFH: 2025Q1