diff --git a/contrib/scripts/NM-log b/contrib/scripts/NM-log
index 8ba2a36ed0..49e187bae6 100755
--- a/contrib/scripts/NM-log
+++ b/contrib/scripts/NM-log
@@ -38,15 +38,32 @@ NM-colorize() {
         GREP_COLOR='01;31' grep -a --color=always '^\|^\(.* \)\?<\(warn> \|error>\) \[[0-9.]*\]' | \
         GREP_COLOR='01;33' grep -a --color=always '^\|^\(.* \)\?<info>  \[[0-9.]*\]\( .*\<is starting\>.*$\)\?' | \
         GREP_COLOR='01;37' grep -a --color=always '^\|\<platform: signal: .*$' | \
-		GREP_COLOR='01;34' grep -a --color=always '^\|\<platform\(-linux\)\?: link: \(add\|adding\|change\|setting\|deleting\) \|\<platform: address: \(deleting\|adding or updating\) IPv. address:\? \|\<platform: \(route\|ip4-route\|ip6-route\|qdisc\|tfilter\): \([a-z]\+\|adding or updating\|new\[0x[0-9A-Za-z]*\]\) \|\<platform-linux: sysctl: setting ' | \
+        GREP_COLOR='01;34' grep -a --color=always '^\|\<platform\(-linux\)\?: link: \(add\|adding\|change\|setting\|deleting\) \|\<platform: address: \(deleting\|adding or updating\) IPv. address:\? \|\<platform: \(route\|ip4-route\|ip6-route\|qdisc\|tfilter\): \([a-z]\+\|adding or updating\|new\[0x[0-9A-Za-z]*\]\) \|\<platform-linux: sysctl: setting ' | \
         GREP_COLOR='01;35' grep -a --color=always '^\|\<audit: .*$' | \
-        GREP_COLOR='01;32' grep -a --color=always '^\|\<device (.*): state change: '
+        GREP_COLOR='01;32' grep -a --color=always '^\|\<device (.*): state change: ' |
+        if [[ "$NM_LOG_GREP" != "" ]]; then
+            GREP_COLOR='01;36' grep -a --color=always "^\\|$NM_LOG_GREP"
+        else
+            /usr/bin/cat -
+        fi
     else
         /usr/bin/cat -
     fi
 }
 
 NM-log() {
+    local NM_LOG_GREP=
+
+    while [[ $# -gt 0 ]]; do
+        if [[ "$1" == "-h" ]]; then
+            shift
+            NM_LOG_GREP="${NM_LOG_GREP+$NM_LOG_GREP\\|}\\<$1\\>"
+            shift
+        else
+            break
+        fi
+    done
+
     (
         if [ "$1" == "j" ]; then
             shift
@@ -59,7 +76,7 @@ NM-log() {
             /usr/bin/less "$a" "$@"
         fi
     ) | \
-        NM-colorize | \
+        NM_LOG_GREP="$NM_LOG_GREP" NM-colorize | \
         LESS=FRSXM less -R
 }