diff --git a/multinode-demo/common.sh b/multinode-demo/common.sh
index f17d970e29..fb1ad40d13 100644
--- a/multinode-demo/common.sh
+++ b/multinode-demo/common.sh
@@ -56,7 +56,10 @@ solana_mint=$(solana_program mint)
 
 export RUST_LOG=${RUST_LOG:-solana=info} # if RUST_LOG is unset, default to info
 export RUST_BACKTRACE=1
-[[ $(uname) = Linux ]] && (set -x; sudo sysctl -w net.core.rmem_max=26214400 1>/dev/null 2>/dev/null)
+
+tune_networking() {
+  [[ $(uname) = Linux ]] && (set -x; sudo sysctl -w net.core.rmem_max=26214400 1>/dev/null 2>/dev/null)
+}
 
 SOLANA_CONFIG_DIR=${SNAP_DATA:-$PWD}/config
 SOLANA_CONFIG_PRIVATE_DIR=${SNAP_DATA:-$PWD}/config-private
diff --git a/multinode-demo/leader.sh b/multinode-demo/leader.sh
index 7616743b2e..ec5b62a395 100755
--- a/multinode-demo/leader.sh
+++ b/multinode-demo/leader.sh
@@ -23,6 +23,8 @@ else
   program="$solana_fullnode"
 fi
 
+tune_networking
+
 # shellcheck disable=SC2086 # $program should not be quoted
 exec $program \
   -l "$SOLANA_CONFIG_DIR"/leader.json \
diff --git a/multinode-demo/validator.sh b/multinode-demo/validator.sh
index 2c40c03a4c..9b17dabaac 100755
--- a/multinode-demo/validator.sh
+++ b/multinode-demo/validator.sh
@@ -71,6 +71,8 @@ rm -rf "$SOLANA_LEADER_CONFIG_DIR"
 $rsync -vPrz "$rsync_leader_url"/config/ "$SOLANA_LEADER_CONFIG_DIR"
 ls -lh "$SOLANA_LEADER_CONFIG_DIR"
 
+tune_networking
+
 # shellcheck disable=SC2086 # $program should not be quoted
 exec $program \
   -l "$SOLANA_CONFIG_DIR"/validator.json -t "$leader_address:$leader_port" \