diff --git a/.bin/ipmi-tweety b/.bin/ipmi-tweety
index d1a70ae..14a1a19 100755
--- a/.bin/ipmi-tweety
+++ b/.bin/ipmi-tweety
@@ -1,3 +1,3 @@
 #!/bin/sh
 ipmitool -U ADMIN -P $(pass Local/TweetyIPMI | head -1) \
-    -I lanplus -H 192.168.1.21 $@;
+    -I lanplus -H 10.20.30.21 $@;
diff --git a/.bin/mount_tank b/.bin/mount_tank
index dad2ba8..53dea85 100755
--- a/.bin/mount_tank
+++ b/.bin/mount_tank
@@ -1,4 +1,11 @@
 #!/bin/sh
+
+if mount | fgrep '/tank/' -q
+then
+    echo "already mounted"
+    exit 1
+fi
+
 awk '$3=="nfs"{print $2}' /etc/fstab \
     | xargs -n1 doas mount \
     | cut -d" " -f-3