interfaces: wait a second, if $ip_file is never read remove it #5367

Stranger things have happened...

src/etc/rc.newwanip

@@ -141,10 +141,6 @@ foreach (array_keys($restartifs) as $ifname) {
  */
 ifgroup_setup();
 
-/* ensured above that this is an IP address */
-$ip_file = "/var/db/{$interface}_ip";
-@file_put_contents($ip_file, $ip);
-
 $cacheip_file = "/var/db/{$interface}_cacheip";
 $cacheip = @file_get_contents($cacheip_file);
 

src/etc/rc.newwanipv6

@@ -107,10 +107,6 @@ if (count(link_interface_to_track6($interface, true))) {
 system_resolvconf_generate();
 system_hosts_generate();
 
-/* ensured above that this is an IP address */
-$ip_file = "/var/db/{$interface}_ipv6";
-@file_put_contents($ip_file, $ip);
-
 $cacheip_file = "/var/db/{$interface}_cacheipv6";
 $cacheip = @file_get_contents($cacheip_file);
 

src/etc/rc.subr.d/var

@@ -154,8 +154,8 @@ fi
 mkdir -p /var/etc
 
 # clear nameserver, searchdomain and IP cache files
-rm -f /var/db/*_ip /var/db/*_ipv6 /var/db/*_cacheip /var/db/*_cacheipv6
 rm -f /var/etc/nameserver_* /var/etc/searchdomain_*
+rm -f /var/db/*_cacheip /var/db/*_cacheipv6
 
 # Clear all files in this directory to prevent stale state of
 # services.  At one point this also helped to prevent shutdown(8)