distfile hostname problem?

[mlh%goathill.org@localhost (MLH)]

It has been about a year since I updated my pkgsrc collection but
when attempting a bulk update, about half of the distfile downloads
fail with a hostname problem that I can't figure out. I am doing
things the same way I have for about 15 or 20 years. What am I
doing wrong now?  Thanks

Examples :

1)

fetch: Unable to fetch expected file gsed-4.9.1
--2023-12-02 16:06:23--  http://%5Cgsed-4.9.1/
Resolving \\gsed-4.9.1 (\\gsed-4.9.1)... failed: No address associated with hostname.
wget: unable to resolve host address '\\gsed-4.9.1'
fetch: Unable to fetch expected file gsed-4.9.1
*** Error code 1

2)

=> Fetching bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz
=> Downloaded size:        0 bytes
=> Total size: 465546556 bytes
--2023-12-02 15:53:31--  http://%5Cbootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz/
Resolving \\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz (\\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz)... failed: No address associated with hostname.
wget: unable to resolve host address '\\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz'
fetch: Unable to fetch expected file bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz
--2023-12-02 15:53:32--  http://local_ports/openjdk21/bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz
Resolving local_ports (local_ports)... failed: No address associated with hostname.
wget: unable to resolve host address 'local_ports'
fetch: Unable to fetch expected file bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz
--2023-12-02 15:53:32--  http://%5Cbootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz/
Resolving \\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz (\\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz)... failed: No address associated with hostname.
wget: unable to resolve host address '\\bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz'
fetch: Unable to fetch expected file bootstrap-jdk-1.21.0.1.12-netbsd-9-amd64-20231119.tar.xz
*** Error code 1