Only load the SOII key if IPv6 is available

Possible now that IP6KERNERL is hoisted.
This also improves readability and zaps double negation logic.

diff --git a/etc/netstart b/etc/netstart
index 15a584b..8c2e302 100644 (file)
--- a/etc/netstart
+++ b/etc/netstart
@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#      $OpenBSD: netstart,v 1.226 2022/11/01 10:45:53 kn Exp $
+#      $OpenBSD: netstart,v 1.227 2022/11/01 11:18:06 kn Exp $
 
 # Turn off Strict Bourne shell mode.
 set +o sh
@@ -339,8 +339,10 @@ fi
 
 # Load key material for the generation of IPv6 Semantically Opaque Interface
 # Identifiers (SOII) used for SLAAC addresses.
-$PRINT_ONLY || [[ ! -f /etc/soii.key ]] ||
-       sysctl -q "net.inet6.ip6.soiikey=$(</etc/soii.key)"
+if $IP6KERNEL && ! $PRINT_ONLY; then
+       [[ -f /etc/soii.key ]] &&
+               sysctl -q "net.inet6.ip6.soiikey=$(</etc/soii.key)"
+fi
 
 # If we were invoked with a list of interface names, just reconfigure these
 # interfaces (or bridges), add default routes and return.