Fix for nginx with disabled ipv6 #331

Job	Run time
bullseye armv7 / build	14m 53s
bookworm armv7 / build	15m 19s
bullseye armv7 / test (run_install_common.sh)	14m 17s
bullseye armv7 / test (run_install_faststartup.sh)	10m 27s
bullseye armv7 / test (run_install_webapp_local.sh)	22m 18s
bullseye armv7 / test (run_install_webapp_download.sh)	14m 52s
bullseye armv7 / test (run_install_libzmq_local.sh)	23m 50s
bookworm armv7 / test (run_install_common.sh)	14m 12s
bookworm armv7 / test (run_install_faststartup.sh)	10m 7s
bookworm armv7 / test (run_install_webapp_local.sh)	20m 33s
bookworm armv7 / test (run_install_webapp_download.sh)	13m 25s
bookworm armv7 / test (run_install_libzmq_local.sh)	25m 28s
bullseye armv7 / cleanup	2s
bookworm armv7 / cleanup	2s
	3h 19m 45s

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