From 1a0d076dfb4ecdf19eb7c31f28dc92d74f423156 Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Sat, 21 May 2022 10:23:01 +0100
Subject: [PATCH] Disallow -4 and -6 in TOOLTYPE_NONNETWORK.

They were accepted by Unix pterm, by mistake, and then totally ignored
because nothing in pterm ever makes a network connection, so nothing
cares whether you configured it to use IPv4 or IPv6.
---
 cmdline.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmdline.c b/cmdline.c
index 8e48b358..68eafc8e 100644
--- a/cmdline.c
+++ b/cmdline.c
@@ -749,11 +749,13 @@ int cmdline_process_param(const char *p, char *value,
 
     if (!strcmp(p, "-4") || !strcmp(p, "-ipv4")) {
         RETURN(1);
+        UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
         SAVEABLE(1);
         conf_set_int(conf, CONF_addressfamily, ADDRTYPE_IPV4);
     }
     if (!strcmp(p, "-6") || !strcmp(p, "-ipv6")) {
         RETURN(1);
+        UNAVAILABLE_IN(TOOLTYPE_NONNETWORK);
         SAVEABLE(1);
         conf_set_int(conf, CONF_addressfamily, ADDRTYPE_IPV6);
     }