From 5d4e3699b29b1ce9d83626ebb5723587a32d523f Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Fri, 11 Sep 2020 02:33:54 -0600
Subject: [PATCH] dhcp: evaluate IF_HOSTNAME for shell fragments

---
 executor-scripts/linux/dhcp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/executor-scripts/linux/dhcp b/executor-scripts/linux/dhcp
index 0a2b04c..82ae793 100755
--- a/executor-scripts/linux/dhcp
+++ b/executor-scripts/linux/dhcp
@@ -2,6 +2,9 @@
 
 set -e
 
+# some users provide a shell fragment for the hostname property.
+[ -n "$IF_HOSTNAME" ] && IF_HOSTNAME=$(eval echo $IF_HOSTNAME)
+
 determine_implementation() {
 	[ -n "$IF_DHCP_PROGRAM" ] && echo "$IF_DHCP_PROGRAM" && return
 	[ -x /sbin/dhcpcd ] && echo "dhcpcd" && return