bug#48214: inetutils-1.9.4 build fails

[Bone Baboon]

On a x86_64 computer when I run `guix build --no-substitutes --keep-failed 
inetutils` the build fails because of one failed test.

`guix describe` outputs:

```
Generation 18   May 03 2021 13:15:55    (current)
  guix 065d2cd
    repository URL: https://git.savannah.gnu.org/git/guix.git
    commit: 065d2cd6ced96ddb38c15a46f798488f61660a33
```

Error message:

```
command "make" "check" failed with status 2
note: keeping build directory `/tmp/guix-build-inetutils-1.9.4.drv-0'
builder for `/gnu/store/immphxs1iknnz5rfdhcs4i62j22yshqx-inetutils-1.9.4.drv' 
failed with exit code 1
build of /gnu/store/immphxs1iknnz5rfdhcs4i62j22yshqx-inetutils-1.9.4.drv failed
View build log at 
'/var/log/guix/drvs/im/mphxs1iknnz5rfdhcs4i62j22yshqx-inetutils-1.9.4.drv.bz2'.
guix build: error: build of 
`/gnu/store/immphxs1iknnz5rfdhcs4i62j22yshqx-inetutils-1.9.4.drv' failed
```

Test suite contents:

```
===============================================
   GNU inetutils 1.9.4: tests/test-suite.log
===============================================

# TOTAL: 15
# PASS:  8
# SKIP:  6
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

SKIP: ping-localhost.sh
=======================

ping needs to run as root
SKIP ping-localhost.sh (exit status: 77)

SKIP: traceroute-localhost.sh
=============================

traceroute needs to run as root
SKIP traceroute-localhost.sh (exit status: 77)

SKIP: tftp.sh
=============

The use of the superserver Inetd in this script requires
the availability of "/etc/nsswitch.conf", "/etc/passwd", and
"/etc/protocols".  At least one of these is now missing.
Therefore skipping test.
SKIP tftp.sh (exit status: 77)

FAIL: syslogd.sh
================

../src/logger: ::1:7041: Cannot assign requested address
Registered 24 successes out of 25.
NOTICE: Standard port test was not run.
Failing some tests.
FAIL syslogd.sh (exit status: 1)

SKIP: ftp-localhost.sh
======================

The use of the superserver Inetd in this script requires
the availability of "/etc/nsswitch.conf", "/etc/passwd", and
"/etc/protocols".  At least one of these is now missing.
Therefore skipping test.
SKIP ftp-localhost.sh (exit status: 77)

SKIP: inetd.sh
==============

This test requires the availability of "/etc/protocols",
a file which can not be found in the current system.
Therefore skipping this test.
SKIP inetd.sh (exit status: 77)

SKIP: telnet-localhost.sh
=========================

No TTY assigned to this process.  Skipping test.
SKIP telnet-localhost.sh (exit status: 77)
```