Content differences:
--- /etc/ssh/ssh_known_hosts.orig
+++ /etc/ssh/ssh_known_hosts
@@ -2189,7 +2189,6 @@
tools-legacy-redirector-3.tools.eqiad1.wikimedia.cloud,tools-legacy-redirector-3,172.16.18.124,2a02:ec80:a000:1::304 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBMPORLoxc/AMwnMHZ4uNcWnYf5MjCFp65kqgQF6lrnvp6UWf3g0cBwDhoNuNpRN7cwnxqhZFcBNbmciJuHen9hI=
tools-mail-4.tools.eqiad1.wikimedia.cloud,tools-mail-4,172.16.2.140,fe80::f816:3eff:fe59:5c57 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJ82MLUbt8Vd7/mJJgvmSl5ca1AocqFQaIVwFo1H0RbMCZb6UROQU5iT2Mwf8yHklj3El/vCreORITW8aBQECSk=
tools-nfs-3.tools.eqiad1.wikimedia.cloud,tools-nfs-3,172.16.20.177,2a02:ec80:a000:1::167 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBIszXS4FyHMdthWuDeu4kiXYEsHU4PVr9mECD23kx7cq/dCMTTKKRavQtRRJ+5ipCRqulmUOoZS2ucyDfv6tjSc=
-tools-package-builder-04.tools.eqiad1.wikimedia.cloud,tools-package-builder-04,172.16.3.185,fe80::f816:3eff:fe09:8371 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBPfx2O+flxl6RhLvBxcz/br+EQYlHJJdIKA7IYyTquHw+U5AbsNzOgLAruFDoEaqL1dl0QBaKJhv2aKH6i+AkKs=
tools-prometheus-8.tools.eqiad1.wikimedia.cloud,tools-prometheus-8,172.16.19.52,2a02:ec80:a000:1::7 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBGwTWJIUhLFQof6qWd7ja1C7ESNYQCdaajql4aposq9VCIBArDjwDG8pikmGKMDt1pKibEnh6aJDVaPL2i5Wwk4=
tools-prometheus-9.tools.eqiad1.wikimedia.cloud,tools-prometheus-9,172.16.19.33,2a02:ec80:a000:1::2e2 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBCUXfQ2FcAnZEwSx/Ml8fO/EpEqkznx4qEHyniTLGiXD6uzK0IcTomgKmKWw5u8vDkDSCQh77QfMe5n5AThXcXI=
tools-puppetdb-2.tools.eqiad1.wikimedia.cloud,tools-puppetdb-2,172.16.6.119,fe80::f816:3eff:feca:49f7 ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBDiQqpXF+0XDMb7C7483OjJZsABdM99I62/mwd7H+XGxBQQfoRwxNzVPSIPquhNksK3IFDR+SInNQHztCVeJSOI=