From 189b3763818fe5792cf06ead5f96f13be4080ed9 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Fri, 11 Oct 2019 22:30:22 -0400
Subject: new target: make install-bootserver

---
 src/generate-network-filter.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100755 src/generate-network-filter.sh

(limited to 'src')

diff --git a/src/generate-network-filter.sh b/src/generate-network-filter.sh
new file mode 100755
index 0000000..a2e49d0
--- /dev/null
+++ b/src/generate-network-filter.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+gen_filter()
+{
+  IFS=. read a b c d
+  [ "$a" -a "$b" -a "$c" -a "$d" ] || return
+  cprime=$((c+1))
+  echo s/$a\\.$b\\.$c\\.\\\([0-9]*\\\)/$a.$b.$cprime.\\\\1/g
+}
+
+get_default()
+{
+  ip route | grep '^default via 192\.168\.[^.]*\.1' |
+    (read default via what ip; [ "$what" ] && echo $what)
+}
+
+get_default | gen_filter
+
-- 
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